—I did not know you were good friends.
—You__________. I have known her since she moved here. You were abroad then.
| A．may have | B．needn’t have | C．couldn’t have | D．must have |
Would you mind telling me _______ language your friend speaks?
| A．which |
| B．what |
| C．how |
| D．that |
When I try to understand ________ that prevents children from getting fat, it seems to me that there are two reasons.
| A．why it is |
| B．what it is |
| C．why is it |
| D．what is it |
China’s success in manned-spacecraft travel shows ________ our country has become one of the greatest powers in space research.
| A．what |
| B．which |
| C．/ |
| D．is that |
It was a matter of ________ would take the position.
| A．who |
| B．whose |
| C．whom |
| D．what |
—Do you remember ________ he came?
—Yes, I do. He came by car.
| A．how |
| B．when |
| C．that |
| D．if |