Mary _________ as a volunteer teacher for 10 years.
#42380
A
works
B
will work
C
worked
D
has worked
推荐题目
If your father ______ tomorrow, please tell me.
#37806
A
shall come
B
is going to come
C
is coming
D
comes
Tom _    _ his room every day. He           it now.
#41522
A
cleans, clean
B
cleans, cleaning
C
cleans, is cleaning
D
clean, is cleaning
We have done what ______.So don’t panic any more.
#38570
A
is doing
B
has done
C
is done
D
can be done