Mary _________ as a volunteer teacher for 10 years.
#42380
A
works
B
will work
C
worked
D
has worked
推荐题目
Mr. and Mrs. Black ______ back _________.
#41874
A
hasn’t come, yet
B
haven’t come , yet
C
haven’t come， already
D
hasn’t come , already
We _______ many roses in the garden since last year.
#38295
A
plant
B
planted
C
have planted
D
are planting
Henry will give us a report as soon as he _______.
#39101
A
arrives
B
arrived
C
is arriving
D
will arrive