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
Great changes ________ in that school. It is no longer _______ it was 20 years ago.
#103299
A
have taken place, that
B
have been taken place, what
C
have taken place, what
D
took place, the place what
The manager ______ the workers how to improve the program since 9 am.
#102119
A
has told
B
is telling
C
has been telling
D
will have told