--- I’m sorry I ________ make it yesterday. I ________, but I was really busy.
--- That’s fine. I know you are usually busy at this time of year.
| A．couldn’t, intended to have come | B．didn’t, intended to have come |
| C．couldn’t, intended to come | D．didn’t, intended to come |
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 |