His English ________ a lot since he took the course.
#37514
A
improved
B
was improved
C
has improved
D
has been improved
推荐题目
Let’s go climbing if it _________ tomorrow.
#39182
A
won’t snow
B
doesn’t snow
C
isn’t snow
D
can’t snow
The boy fell asleep where he ______,without undressing. 
#63710
A
was laying
B
was lying
C
had laid
D
had lied