I had a little trouble in English grammar.
#49930
A
learn
B
learned
C
learning
D
to learn
推荐题目
The police warned the children __________the football in the street.
#50675
A
don’t play
B
not play
C
to not play
D
not to play
Students should pay attention to __________ the teacher in class.
#50928
A
hear
B
listen to
C
listening to
D
hearing
