They must have finished the work by the end of last month, ______?
| A．mustn’t they | B．haven’t they | C．hadn’t they | D．didn’t they |
It’s time for supper, katty. Don’t _____there any longer. Get up and ___the table.
| A．lie; lay | B．lay; laid | C．lay; lain | D．lie; lie |
Don’t expect me to ___after you have a crazy time.
| A．pick up | B．clear up | C．tidy | D．clear |
When and where to go for the on-salary holiday____yet.
| A．are not decided | B．have not been decided |
| C．is not being decided | D．had not been decided. |
She has set a new record, that is, the sales of her latest book ___50 million.
| A．have reached | B．has reached | C．are reaching | D．had reached |
The first use of atomic weapons was in 1945, and their power ____increased enormously ever since.
| A．is | B．was | C．has been | D．had been. |