It’s difficult _____ your sound because the noise is too high.
#61203
A
to listen 
B
to know 
C
to learn
D
to hear
推荐题目
 I hope_______ my birthday party next Saturday.
#57334
A
you to come to
B
that you to come
C
you come
D
that you can come to
The government         the homeless people         nice houses.
#60220
A
provide, to
B
provides, with
C
offer, with
D
offer, for