It is thought that one billion people I the world,  _____is half the word’s workers, earn their living by farming.
#91823
A
if
B
that
C
which
D
what
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I'm amazed to hear from my school teacher again. _______,it is ten years since we met last.
#91837
A
In a word
B
What’s more
C
That’s to say
D
Believe it or not
— ______ will get the first prize?— I'm sure, Li Hua. 
#91745
A
Who do you think
B
You think who
C
Do you think who
D
Whom do you think