—Mary was heard ________ just now. What happened?—John was telling a joke.
#49144
A
to cry
B
laugh
C
to laugh
D
cry
推荐题目
The old man was too poor ___________a room _________ .
#48825
A
have; to live
B
to have; live
C
to have; to live
D
to have; to live in
Three trees can do the job of 15air-conditioners _________ almost all day.
#48595
A
run
B
are running
C
ran
D
running