His English ________ a lot since he took the course.
#37514
A
improved
B
was improved
C
has improved
D
has been improved
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He _____in Xinxiang for five years when I heard his news.
#42297
A
has lived
B
had lived
C
is living
D
has been lived
He looks very tired because he           well last night.
#39894
A
didn’t sleep
B
hasn’t slept
C
slept
D
sleeps