_______ on earth do you suppose_______ this?A．What; could doB．What; could have d

题干

_______ on earth do you suppose_______ this?

A．What; could do	B．What; could have done
C．Who; do	D．Who; could have done

上一题下一题 0.85难度单项选择更新时间:2013-06-20 10:18:45

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