– What a hard chair! --Yes, it is. But in fact, it is very comfortable to _____.
| A．sit | B．sit on | C．be sat | D．be sat on |
相关试题
You’d better _____ some money for special use.
| A．pick up | B．set aside | C．put off | D．give away |
Many studentspreparing for the midterm examination.
| A．are engaging in | B．are engaging themselves |
| C．are engaging themselves | D．are engaged in |
________ from space, the earth , with water_______ seventy percent of the surface , looks like a blue ball.
| A．Seen ; covered | B．Seen ; covering |
| C．seeing ; covering | D．Seeing ; covering |
— What made her so sad？
— _____ she failed in the examination.
| A．That | B．Because | C．As | D．Since |
a biology researcher.相关知识点
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