Without the contribution of Qian Xuesen, China __________ such great achievements in space technology.
| A．wouldn't make |
| B．can't make |
| C．shouldn't have made |
| D．wouldn't have made |
We _____ to move but are still considering where to go to.
| A．are deciding | B．decided | C．have decided | D．had decided |
You _____ your turn so you’ll have to wait.
| A．will miss | B．have missed | C．are missing | D．had missed |
I _____ for five minutes； why don’t they come？
| A．am calling | B．Called | C．was calling | D．have been calling |
It’s good that we _____ to the park because it’s started to rain.
| A．don’t go | B．hadn’t gone | C．didn’t go | D．wasn’t going |
Look at that little boy wandering about — perhaps he _____ his mother.
| A．will lose | B．is losing | C．had lost | D．has lost |