When I got into the classroom, I found a book ______ on the floor.
#51284
A
lying
B
lies
C
lie
D
lied
推荐题目
Neil Armstrong is the first man .
#48796
A
walk on the moon
B
walk on moon
C
to walk on the moon
D
to walk on moon
It’s__________ for all of them__________ to the top of the mountain.
#48932
A
tiring; getting
B
tired; to get
C
tired; getting
D
tiring; to get
.Your son has kept _________ for two hours. You’d better ask him to have a rest.
#51260
A
study
B
studied
C
to study
D
studying
Although we’ve learned English for years, we have trouble _____ the foreigners.
#50181
A
understand
B
to understand
C
understanding
D
of understanding