E-mail, as well as the telephone, ___________ an important part in daily communication.
#85616
A
is playing
B
have played
C
are playing
D
play
推荐题目
—What _______ the number of the students in your school?—About two thousand. A number of them _______ from the countryside.
#43432
A
is; ,are
B
is; is
C
are; is
D
are; are
--What is that on the table? --Oh, a set of ___________ on the table.
#43644
A
key is
B
keys are
C
keys is
D
key are