Seeing the world-famous pianist standing in front of her, the young pianist ______ a cry of joy and surprise.
| A．left out | B．let out | C．came out | D．spoke out |
-- How was your trip to London ?
-- Great. I was helped by an organization. Otherwise, I _____ it.
| A．wouldn’t afford | B．hadn’t afforded |
| C．wouldn’t have afforded | D．needn’t have afforded. |
There is no greater pleasure than running on the playground, ____ after a ball.
| A．chased | B．chasing |
| C．to chase | D．having chased |
I have told you the truth. ______ I keep repeating it?
| A．Must | B．Can | C．May | D．Will |
Their relationship_______ ups and downs over the past century.
| A．will see | B．sees |
| C．has seen | D．had seen |
________carefully if any change occurs when doing experiments in the lab.
| A．Observe | B．To observe |
| C．Observed | D．Observing |