中国的近代科技发展史:It was evening ____ I reached the town.

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A.when B.before C.that D.since

2.It was spring_____my wife returned from Beijing.
答案支同上，那一选项是正确的

1
A.
When引导时间状语从句。

2
A.
这不是强调句！强调句的句子成分是完整的！
和上面的理由一样，选A。
比较区别（前者是时间状语从句，后者是强调句）：
It was spring when my wife returned from Beijing.
It was in spring that my wife returned from Beijing.

第一句是A，因为这是句定语从句，when需要在句子中作成份。
第二句是C，这句话就是个强调句。

A.这是定语从句，不是强调句。

a
c

It was evening ____ I reached the town. It was evening ____ I reached the town. 改错：That evening I was doing my lesson , It was about nine How was the weather yesterday ? It was terrible ,It rained ____.People could ____go out , 3.In the old days it was difficult for the poor ____ a job. It was proposed that the meeting ____(postpone)该怎样填呢? It was a matter of ____ would take the position . A. who B. whoever A or B ? why? He ____ stay at home because it was raining hard. A.must B. have to C. has to D. has ---Tom fell off his horse and hurt his arms.---____.为什么填So it was with Jack？ Did you see the UFO?When it ____(landed,was landing),I was in the barber' shop!填那个，说一下原因