By the time Jack returned home from England, his son_____ from college.
#102076
A
graduated
B
has graduated
C
had been
D
had graduated
推荐题目
 I know Mr. Brown;we __ to each other at an international conference.
#104419
A
are introduced
B
have been introduced
C
were introduced
D
had been introduced
— Why, David, you look so tired!— Well, I ________an article and I must finish it tomorrow.
#102961
A
was writing
B
will be writing
C
have been writing
D
have written
So hot a day! I would buy one soft­drink can, but I ________ money on me.
#102674
A
didn’t have
B
don’t have
C
hadn’t had
D
won’t have
Had the weather been good, the children ____ out for a walk.
#102726
A
had gone
B
could have gone
C
would go
D
went