问题
选择题
_____ he had not been ill , Tom would have won the race.
A．Unless
B．As
C．If
D．Until
答案
C
题意：如果汤姆没有生病，他就会赢得那场赛跑。if引导虚拟的条件状语从句。
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_____ he had not been ill , Tom would have won the race.
A．Unless
B．As
C．If
D．Until
C
题意：如果汤姆没有生病，他就会赢得那场赛跑。if引导虚拟的条件状语从句。