So many problems ________， he is having a difficult time.A．settledB．to settleC．s_刷题宝

题干

So many problems ________， he is having a difficult time.

A．settled	B．to settle
C．settling	D．are to settle

上一题下一题 0.64难度单项选择更新时间:2014-07-10 04:28:00

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