1.

1.experience

2.whose

3.choose

4. scheme

5. since

6. erupted

2.

1c     2e     3f      4a     5b    6d

3.

1save

2.has already watched

3. bought

4. are watered

5. was sleeping

6. friendship

7. friendly

8. disastrous

4.

1. but ->bỏ

2. interested->interesting

5.

1.has to be built for him by thousands of people for years

2.......she could sent me.....

3. If she doesn't hurry, she will......

4.......what country I came from

5.......she had to go to Hanoi the next day

6. in spite of on a diet, he ate the chocolate cake.

=>
1/
1. experience
2. whose
3. choose
4. scheme
5. since
6. erupted

2/
1. C compared with other appliances in the same category.
2. E when he heard that he failed the test.
3. F as the bus is late.
4. A that is on the top shelf is the one that I nees.
5. B and had a picnic on the river bank.
6. D hit the city at 2 this morning.

3/
1. saving
2. has already watched
3. bought
4. are watered
5. was sleeping
6. friendship
7. unfriendly 
8. disastrous

4/
1. but -> x
2. interested -> interesting
5/
1. That castle has to be built for him by thousands of people for years.
2. I wish she sent me her recent photos.
3. If she hurried, she wouldn't miss the train.
4. Bill asked me what country I came from.
5. My mother said that she had to go to Hanoi the following day.
6. In spite of being on a diet, Mr.Allen ate the chocolate cake.