After ten hours’ drive, we came to ________ is called a green house, through the glass wall of ________, we saw lots of green plants.
| A．where, which |
| B．that, that |
| C．what, which |
| D．where, that |
If better use is ________ your spare time，you’ll make good progress in doing your business.
| A．spent | B．made of | C．used for | D．taken |
It is believed _______ he has gone to Shanghai. The problem is ________ we can’t get in touch with him.
| A．when; that | B．that; that | C．that; whether | D．不填；不填 |
____ the 1990s, the number of antelopes had fallen to about 50,000.
| A．During | B．Since | C．By | D．Over |
I'll never forget the day _______ I bought my own guitar with my own money.
| A．where | B．on which | C．on when | D．that |
--Are you sure to help me find____________ bed for my new house?
--Of course, but not now. I'm heading, for____________ bed and a good sleep.
| A．a, a | B．a, 不填 | C．the, a | D．a, the |