题目内容
【题目】—Jack had no confidence and courage at that time.
—That was the reason ________ he gave up the plan. ( )
A.why
B.when
C.what
D.how
【答案】A
【解析】A.why在定语从句充当原因状语;B.when定语从句中做时间状语;C.what定语从句无此关系词;D.how定语从句无此关系词;句意:—那是杰克没有自信心和勇气。—这就是他放弃计划的原因。根据句意,故选A.
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