By the time Jack returned home from England, his son _______ from college.
#100009
A
graduated
B
has graduated
C
had been graduating
D
had graduated
推荐题目
---Remember the first time we met, Mary? ---Sure．You ______ in the supermarket．
#103848
A
had shopped
B
have shopped
C
were shopping
D
shopped
--- “Fail to do your homework again?”---“Sorry, I ____ something else and didn’t hear your assignment.”
#100501
A
thought
B
had thought
C
was thinking
D
have been thinking
We have done things we ought not to have done and_____ undone things we ought to have done.
#103904
A
left
B
leave
C
will leave
D
leaving
------Tom is never late for work. Why is he absent today?------ Something _______ to him.
#101563
A
must have happened
B
can have happened
C
must happen
D
can happen