He is very serious. No one can make him___.
#50906
A
laugh
B
laughs
C
to laugh
D
laughing
推荐题目
She tried ________ Chinese in English.
#51095
A
to not speak
B
not to speak
C
not speaking
D
didn’t to speak
When the teacher came in, he saw some boys _______ behind Daniel, _______ the computer games. 
#50360
A
sit, watching
B
sitting, watching
C
sit, to watch
D
sitting, watched
This river is too wide for the swimmers _________. 
#48977
A
to swim
B
to swim across
C
to swim in
D
swimming