第七章测试1.
It ___ Mike and Mary who helped the old man several days ago.
A:was B:were C:are D:had been
答案:A
2.
It was not until 1920 ___ regular radio broadcasts began.
A:since B:that C:when D:which 3.
She said she would go and she ___ go.
A:did B:didn’t C:would D:do 4.
It was the training ___ he had as a young man ___ made him such a good engineer.
A:which; that B:that; what C:that; which D:what; that 5.
It was not until 1936 ___ baseball became a regular part of Olympic Games.
A:then B:when C:that D:which
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