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1,Having walked in the desert for several days ,we finally r

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1,Having walked in the desert for several days ,we finally reached what was called oasis,_C___.
A exhausting B being exhausted C exhausted D exhaust
2.he is supposed___C___an hour ago ,but he hasn't turned up by now.
A to arrive B to arriving C to have arrived D to having arrived
3._A____you _______him around the museum yet?
yes,We had a great time there.
A Have shown B Do show C Had shown D Did show
1,这是过去分词 作伴随状语 相当于形容词 作状语 ,与句子主语 是主表关系.
C exhausted
2.这是动词不定式 的完成形式 可以看作 is supposed的宾语 .表示 已经发生或已经完成的动作 C to have arrived
3.yet经常用在现在完成时 的一般疑问句 和否定句中.
所以 应该 用现在完成时.

A Have shown