The moment John will never forget is Mr．Smith gave him a lot of valuable advice on how to improve his writing．
| A．that; that | B．that; when | C．when; that | D．when; when |
There is a common belief among them ________ rubbish can and should be put to good use.
| A．which | B．if | C．whose | D．that |
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．it that |
________ you have seen both fighters，________ will win?
| A．Since；do you think who |
| B．As；who you think |
| C．When；whoever |
| D．Since；who do you think |
It was a matter of ________ would take the position.
| A．who | B．whoever | C．whom | D．whomever |
—I drove to Zhuhai for the air show last week.
—Is that ________ you had a few days off?
| A．why | B．when | C．that | D．where |