Emergency line operators must always___calm and make sure that they get all the information they need to send help.
#81291
A
grow
B
appear
C
become
D
stay
推荐题目
It took ______ people as well as ______ time to build the pyramid.
#67869
A
a large number of; a great many
B
a great many; a large amount of
C
a great many of; large amounts of
D
a large amount of; a great deal of
This new-type machine____________  little room.
#83438
A
takes up
B
is taken up
C
has been taken up
D
is taking up