When I walked past his house, I heard him _______.
#50226
A
to sing
B
sang
C
sings
D
singing
推荐题目
He always tells us stories to make us .
#50148
A
interested to laugh
B
interesting laughing
C
interesting laugh
D
interested to laugh
We are busy__________ the final exams.
#51125
A
to prepare for
B
preparing for
C
preparing
D
preparing with
