1. Keeping the environment clean is very important.
ÊIt’s………………………………………………………
3. It’s three years since I last spoke to her.
ÊI haven’t………………………………………………….…………
1. How long is it since you used the car?
ÊWhen …………………………………………………….…………..
5. We started living here 15 years ago.
ÊWe have………………………………………………………………...
6. We can’t drink the water because it’s too hot.
ÊThe water isn’t…………………………………
7. It has been raining for five hours.
ÊIt started………………………………………………...…………………
8. To help mom at home is a good activity.
ÊIt is………………………………..…..……………………………
Loga
Sinh Học lớp 12
