We teachers should ______ students ______ us questions in class. 
#48995
A
be allowed, to ask
B
let, to ask
C
encourage, to ask
D
allow, ask
推荐题目
The boy is often seen _______ basketball after school.
#50874
A
play
B
to play
C
to playing
D
played
She is often seen ______ the old woman.  
#50014
A
help
B
helping
C
to help
D
help to
I often practice _________ football on Friday.
#49616
A
playing
B
to playing
C
play
D
to play
Do you prefer _______?
#49119
A
skate
B
skates
C
skating
D
skated