Someone is ringing the doorbell. Go and see ______.
#16917
A
who is he
B
who he is
C
who is it
D
who it is
推荐题目
The doctor advised Lisa strongly that she should take a holiday but _______ didn’t help.
#15640
A
it
B
which
C
what
D
this
Doctors should take special care when treating children because their breathing rate is different from _____ of adults.
#15553
A
that
B
those
C
some
D
one
