XI.1f but now his work has become so bad that his teacher says he is just wasting his time there

2e but that isn't all last sunday I got up earlier than usual

3c I often leave it there so that I won't forget it when I go out d he had taken some money out of it and was just about to put it in his pocket

4a but now I realize that he's so hooked on them he will even steal from his own mother in order to pay for the habit

5b even if he wanted to he couldn't- and he doesn't 

XII.1 mrs.tuyet advised nga not to lend him so money

2 to everyone's was surprise geoff left the party early

3 It was too late for anything to be done.

4 can't you offer the better price?

5 I used to go to the church every sunday

6 a letter was sent to my friend in london last week

7 I haven't seen him since I was a student

8 she reminded me to bring your passports with you when you go abroad

9 would you mind not smoking in the ward?

10 because he was lazy he failed the exam

XIII.1 I stayed up late last night as I wanted to finish my homework

2 the thick fog made it impossible for me to drive to work

3 this is the first time nick has been to vn

4 mr lam doesn't teach the same subject as  mr hai

5 I don't want to see him tomorrow

XIV.1 instead of reusing plastic bags we ought to use cloth bags

2 will you have a look at my house for me while I am on holiday?

3 we hope to give more green color to the town and earn more money for our group

4 "friends of the earth" is an organization protecting the environment

5 it was brave of him to jump into the river to save the child