His sister has become a doctor, ______ is what he wants to be.
| A．who | B．whose | C．that | D．which |
It is no good ______ today's work for tomorrow.
| A．to leave | B．leaving | C．that you leave | D．leave |
It's no use______ with him. You might as well ______ with a stone wall.
| A．arguing, argue | B．to argue, arguing | C．arguing, arguing | D．to argue, argue |
I couldn't understand ______ at the poor child.
| A．you to laugh | B．you laugh | C．why laugh | D．you laughing |
We can't understand ______ a decision until it is too late.
| A．him to postpone to make | B．his postponing to make |
| C．him to postpone making | D．his postponing making |
Alien said that his trip was _______.
| A．interested | B．interest | C．interesting | D．of interest |