In order _______ his English,he joined an English club.
#48846
A
improving
B
to improve
C
improves
D
improve
推荐题目
Tom spent two years _________ his book.
#50369
A
finishing writing
B
to finish writing
C
finishing to write
D
to finish to write
The robot needs _______ once a month. And we will check it for you for free.
#48844
A
to check
B
checked
C
checking
D
to checking
 I think this piece of music is  worth_______.
#49895
A
listening
B
to be listened to
C
listen to
D
listening to