It is important for us _____ our English. 
#54004
A
improving
B
improved
C
to improve
D
improves
推荐题目
He often_______up at 5:30, but he _______ up at 6:00 yesterday. 
#58738
A
gets; got
B
gets; gets
C
got; gets
D
get; get
Mary has a toothache(牙痛).She has to_______.
#57640
A
go online
B
use the Internet
C
go to the dentist
D
watch a game show