quickly please
问题描述：
quickly please
best choice
It was not until 1920___regular radio broadcast began.
a.while b.which c.that d.since
It was not___she took off her dark glasses___I realized that she was a famous film star.
a.when,that b.until,that c.until,when d.when,then
这两句是什么从句 为什么你会选择这个答案
答
1.C
这是强调句型,It was...that是在这句子里是强调时间.
2.C
这个不是强调句型,前面的It是when后引导的整句话.
相信我,准没错!