单选题
______ ,I should ask them some questions.
A、
Should they come to us
B、
If they come to us
C、
Were they come to us
D、
Had they come to us
【正确答案】
A
【答案解析】
虚拟语气。表示与将来的事实相反的虚拟句。虚拟语气省略if should提前，句子倒装。因此答案为A。
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