We couldn’t help       after hearing the joke.
#52366
A
laughed
B
laugh
C
to laugh
D
laughing
推荐题目
Why ________ at home and watch TV? 
#61412
A
don’t stay
B
not staying
C
don’t you stay
D
not to stay
—What should we________ the old books? —Let’s ask our teacher how to________ them.
#56498
A
do with; do with
B
deal with; deal with
C
deal with; do with
D
do with; deal with
She________ Ken Green. Her last name ________ Green. 
#57179
A
am,am
B
is,is
C
is,am
D
am, is