语法词汇练习 语法大全 语法详解 英语听力 
It was not until 1920      regular radio broadcast began.
#71629
A
while
B
which
C
that
D
since
下一题
推荐题目
October 15th,2008 is the first Global Handwashing Day, ____goal is to create a     culture of handwashing with soap.
#71730
A
of which
B
whose
C
on which
D
when
—Do you know when he        back tomorrow?—Sorry, I don’t know. When he        back, I will tell you.
#40992
A
comes; comes
B
comes; will come
C
will come; comes
D
will come; will come
Now he works in the factory ______ his father used to work.
#70495
A
where
B
when
C
in which
D
that
Throughout the world__________advance has been made in science and technology is due to education which brings forth knowledge, creation and inventions.
#73495
A
whoever
B
whatever
C
what
D
that
         for the fact that she got hit by a car and broke her leg on her way to school, she might have passed the exam.
#69832
A
Hadn’t it been
B
Had it not been
C
Was it not
D
Were it not