it b.work out it c.work it out d. work out
答案:d [因the problem充当句子的主语,在逻辑上是work out的宾语,故应选d。]
2.i can’t go home now.a lot of work ________ to be done.
a.stays b.is staying c. remains d.is remaining
答案:c [remain在此处为动词,其后接不定式,意为“仍然……”。一般不用于进行时中。]
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