Điền từ thích hợp vào chỗ trống
1 ______you like chocolate ?
2 How long ______An and Phuc been friends with each other?
3 Who_____sleeping in your room?
4______you found your keys? No, I haven't found them yet
5_______you travel to a mountainous area last summer?
6_____have you give up smoking? For about 2 years
7______broken An's favourite vase? Her brother did it
8___water should we drink every day?
9 _____did you use to go to school ? I used to go on foot
10____did you have  for breakfast? Bread and eggs
11______didn't you invite Jim to the senior prom?
12_____ethic groups are there in your country?