It is thought that one billion people I the world,  _   is half the word’s workers, earn their living by farming.
#94954
A
if
B
that
C
which
D
what
推荐题目
The man didn’t know _________ the thief broke into the house and stole all his valuable things  
#93875
A
it was when that
B
when it was that
C
that it was when
D
was it when that
--Steven has got the first prize in the math contest. --____ he looks so happy today.
#92575
A
There’s no doubt that
B
It’s no wonder that
C
Thisis no doubt whether
D
That is no wonder whether