题目内容
Everyone has periods in their lives ______ everything seems very hard.
| A.when | B.where | C.which | D.that |
A
考察定语从句关系词用法,根据前置词period期间,可知关系应用when当……时候,in their lives为插入语,故选A。
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| A.when | B.where | C.which | D.that |