It is desirable that the airplane ___________ as light as possible.
（A）is
（B）were
（C）be
（D）had been
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更多大学英语选择题200道试题
- 1I didn't know what to do, but then an idea suddenly ________ to me.
- 2Though he didn't answer my questions quickly, the look on his face ___________ that he was satisfied with me.
- 3First of all, I would like to express my ___________ to my parents, who have cared about me all the time.
- 4She was so _____________ in her job that she didn't hear anybody knocking at the door.
- 5Life insurance, _______ available only to young, healthy persons, can now be obtained for old people.
