ex1

1.D 2.C 3.C 4.A 5.B

EX2

1.written 2.were 3.was built 4.will have 5. has learnt 6.talking

ex3

1.the teacher who teach us math can't come to class today

2.although it rained heavily, she managed to come to class on time

3. i wish i had free time to go ouut with friend

4.the examiner asked lan whether she spent much time on her english

5."Lan is the best at math in my school"the student said

I/
1. D âm câm còn lại /k/
2. C /d/ còn lại /t/
3. D /z/ còn lại /s/
4. C /e/ còn lại /ɪ/
5. A âm câm còn lại /b/

II/
1. written
2. were
3. was built
4. will have

5. has learned

6. to be talked

Ex3/
1. The teacher who teaches us math can't come to class today.
2. Although it rained heavily, she managed to come to class on time.
3. I wish I had free time to go out with my friends.
4. The examiner asked Lan if she spent much time on her English.
5. Lan was said to be the best at math in her school by the students.