— How long have you been collecting shells?
— ______.
| A．After I left school | B．Before I moved here |
| C．When I went to the beach | D．Since I was ten years old |
Flowers____________ along the road last year.
| A．plant | B．planted |
| C．are planted | D．were planted |
He won’t go to the birthday party if the host________ him.
| A．isn’t invited |
| B．doesn’t invite |
| C．won’t invite |
| D．won’t be invited |
— What do you think of Beijing?
— Wonderful. It ________ changed a lot in the last few years.
| A．have | B．has | C．is | D．was |
— You didn’t use to play tennis, ______?
— Yes. I still like playing tennis now.
| A．didn’t you |
| B．did you |
| C．weren’t you |
| D．were you |
---How long ____the supermarket ____? ---Four years.
| A．has, opened |
| B．has, been opened |
| C．did; open |
| D．has, been open |