In order to find the missing child, villagers _______ all they can over the past five hours.
#100499
A
did
B
do
C
had done
D
have been doing
推荐题目
I can't see any coffee in this cupboard. _______?
#104530
A
Has it all been finished
B
Was it all finished
C
Has it all finished
D
Did it all finish
It _____ about twenty years since CCTV ____ to broadcast English programs.
#101693
A
has been; begun
B
is; began
C
is; has begun
D
was; began
In such a fierce competition, a person has to make every effort if he ______ .
#104971
A
has succeeded
B
is to succeed
C
would succeed
D
will succeed