The number of the books in our library _________ about 20,000.
| A．is | B．are | C．has | D．have |
相关试题
The new teaching building ________ before the new term begins.
| A．must be finished | B．must finish |
| C．must finished | D．must being finished |
The teacher asked the students ________.
| A．what they were doing at that moment |
| B．what were they doing at that moment |
| C．how are they doing at that moment |
| D．what they are doing at that moment |
All of us have gone out. There is ________ at home.
| A．somebody | B．nobody | C．everybody | D．anybody |
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