单选题
______ he come tomorrow, I should give him the dictionary he needs.
A、
Had
B、
Should
C、
Were
D、
Would
【正确答案】
B
【答案解析】
题干中包含了一个省略了if的虚拟条件句。条件从句中如果含有be,have,should,则可以将if省略,把这些词放到主语的前面。
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