Ex3
2/ I am pleased that you want to know more.
3/ Ba was taking a shower at 8.00 last night.
4/ It's difficult to learn English.
5/ I want to borrow your dictionary.
6/ They were playing tennis at 10.30 yesterday morning.
7/ Bao is always forgetting to do his homework.
8/ Last week, she had an English test on Friday.
9/ The school festival was held in the yard last week.
10/ In the rice cooking festival, fire is made by traditional way.
Ex4
1/ B
2/ C
3/ D
4/ B
5/ A
6/ B
7/ C
8/ B
9/ C
10/ D