Answer:

`40.` He asked her if she had watched the detective film on TV the previous day.

`-` Câu tường thuật dạng yes / no question:

`@` S `+` asked ( `+` O ) / wanted to know / wondered `+` if / whether `+` S `+` V ( lùi thì ) `+` ...

`-` Quá khứ đơn `->` Quá khứ hoàn thành

`-` yesterday `->` the previous day / the day before

`41.` Tom asked the girl when she had had that picture taken.

`-` Câu tường thuật dạng Wh_question:

`@` S `+` asked ( `+` O ) / wanted to know / wondered `+` Wh_word `+` S `+` V ( lùi thì ) `+` ...

`-` Quá khứ đơn `->` Quá khứ hoàn thành

`-` this `->` that

`42.` Tom suggested going somewhere for a cup of coffee after class.

`-` suggest `+` V_ing: gợi ý, đề nghị, rủ rê làm gì

`43.` The landlady invited the guest for another cup of tea.

`-` invite sb for sth: mời ai cái gì ( với mối quan hệ thân thiết, thân mật )

`44.` My sister suggested going to see Aunt Mary on Sunday.

`45.` She asked me if I had ever seen a flying saucer.

`-` Câu tường thuật dạng yes / no question

`-` Hiện tại hoàn thành `->` Quá khứ hoàn thành 

`46.` James asked me if I wanted him to type that letter for me.

`-` Câu tường thuật dạng yes / no question

`-` Hiện tại đơn `->` Quá khứ đơn

`-` this `->` that

`47.` He asked me why I hadn't come to class the previous day.

`-` Câu tường thuật dạng Wh_question

`-` Quá khứ đơn `->` Quá khứ hoàn thành 

`-` yesterday `->` the previous day / the day before

`48.` My friend asked me if I was going to leave the following day.

`-` Câu tường thuật dạng yes / no question

`-` Hiện tại tiếp diễn `->` Quá khứ tiếp diễn

`-` tomorrow `->` the following day / the next day / the day after

`49.` I asked Bill what time he had gone to bed the previous night.

`-` Câu tường thuật dạng Wh_question

`-` Quá khứ đơn `->` Quá khứ hoàn thành

`-` last night `->` the previous night / the night before

`50.` Ms Lien suggested organizing an English competition for their students.

`40` He asked her if she had watched the detective film on TV the day before

you `->` she

did `->` had

yesterday `->` the day before/the previous day

`-` S + asked + ( sb ) + if/whether + S + V-lùi thì

`41` Tom asked the girl when she had had that picture taken

you `->` she 

did `->` had

this `->` that

`-` S + asked + ( sb ) + wh-questions + S + V-lùi thì

`42` Tom suggested going somewhere for a cup of coffee after class

`-` S + suggested + V-ing : đề xuất làm gì

`43` The landlady invited the guest for another cup of tea

`-` S + invited + sb + for + sth : mời ai đó cái gì

`44` My sister suggested going to see Aunt Mary on Sunday

`-` S + suggested + V-ing : đề xuất làm gì

`45` She asked me if I had ever seen a flying saucer

you `->` I

have `->` had

`-` S + asked + ( sb ) + if/whether + S + V-lùi thì

`46` James asked me if I wanted her to type that letter for me

you `->` I

me `->` her

this `->` that 

you `->` me

`-` S + asked + ( sb ) + if/whether + S + V-lùi thì

`47` He asked me why I hadn't come to class the day before

you `->` I

didn't `->` hadn't

yesterday `->` the day before/the previous day

`-` S + asked + ( sb ) + wh-questions + S + V-lùi thì

`48` My friend asked me if I was going to leave the next day

you `->` I

are ( đi với you ) `->` was ( đi với I )

tomorrow `->`  the following day/the next day

`-` S + asked + ( sb ) + if/whether + S + V-lùi thì

`49` I asked Bill what time he had gone to bed the night before

you `->` he

did `->` had

last night `->` the night before/the previous night

S + asked + ( sb ) + wh-questions + S + V-lùi thì

`50` Ms Lien suggested organizing an English competition for their students

`-` S + suggested + V-ing : đề xuất làm gì

$baoyen.$