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 want to buy a dictionary .But I have ______my money .
#57194
A
used up
B
given up
C
run up.
D
made up
Tom       very happy. He must have passed the test.
#53173
A
looks
B
sounds
C
smells
D
tastes
Danny _______ hard for long to realize his dream and now he is popular.
#52724
A
works
B
is working
C
has worked
D
worked