Don’t bother me．I am listening to the birds ______．
#95520
A
singing
B
sing
C
to sing
D
sung
推荐题目
The Turners consider ____ a computer, which is commonly considered _________ a great help in our work and study.
#93369
A
to buy; to be
B
buying; to be
C
to buy; being
D
buying; being
Every minute is made full use of _______ our lessons.
#97952
A
studying
B
to study
C
study
D
being studied
It is no use ____ without _____.
#97528
A
to talk, doing
B
taking, being done
C
talking, doing
D
being talked, being to do