I mustn’t give up __________ English easily. 
#49048
A
to study
B
studying
C
studied
D
study
推荐题目
Jim asked Ling Feng        his pet dog while he was away.
#50071
A
not to forget to look after
B
not to forget looking after
C
don’t forget to look after
D
don’t forget looking after
It took me a lot of time ____ my homework.
#49434
A
finish
B
to finish
C
finishing
D
finished
Don’t look at me        that.
#49594
A
likes
B
like
C
liking
D
look like
Will you please invite him _________ in a writing competition?
#49993
A
joins
B
to joining
C
to join
D
joining