Trả lời:

Mandy: Hi Matt. How are you? What (1) have you done recently?

Matt: Oh, hi Mandy! Well, (2) l have studied for my exams.

Mandy: That sounds boring! (3) Have you worked hard?

Matt: Very! Basically, (4) l have just sat at my bedroom for the past three weeks and (5) l haven't gone out at all. (6) l have worked with Michael, my best friend, some of the time, though, so at least I've had some company. How about you?

Mandy: Well, my mum and (7) l have painted (I / paint) my bedroom for the last few days. That has been fun! And (8) we also have planned our summer holiday.

Matt: Great! Where are you going?

Mandy: Well, we haven't decided yet. (9) we have looked  at different places to see which we like best.

Matt: I'm sure you'll have a great time, wherever you go. Oh, by the way, (10) l have thought  of having a party when I finish my exams. Would you like to come?

Mandy: Sure! That would be great!

Giải thích:

Làm theo cấu trúc của thì hiện tại hoàn thành tiếp diễn (Present perfect continuous)

(+) Thể khẳng định

S + have/has + been + V-ing

*Chú ý: "been" luôn luôn đứng sau "have" và has".

(-) Thể phủ định

S + have/has + not + been + V-ing

*Chú ý: Câu phủ định ta chỉ cần thêm "not" ngay sau trợ động từ "have/has".

- haven't = have not

- hasn't = has not

(?) Thể nghi vấn

Have/Has + S + been + V-ing ?

*Chú ý:

- Câu nghi vấn ta đảo trợ động từ "have/has" lên đầu câu.

- Câu hỏi dùng "what, how, when, why,..." có dạng: Wh-word + have/has + S + been + V-ing ?