In spring, we can often hear some birds_______ in our school.
#54239
A
singing
B
sing
C
to sing
D
sings
推荐题目
You must be very tired. Why not  ___________a rest?
#55275
A
to stop to have
B
to stop having
C
stop to have
D
stop having
--What did you do last weekend, Sarah?--I
#52073
A
would do my homework
B
was practicing speaking English
C
had surfed on the Internet
D
studied for the test
I could ________ my bed and ________ my clothes. 
#54772
A
make; fold
B
make; do
C
fold; do
D
fold; wash
____you go to school by bus?
#59322
A
Are
B
Is
C
Do
D
Can