—Has Billy finished his homework today?—I have no idea.He        it this morning.
#104538
A
would do
B
was doing
C
has done
D
had done
推荐题目
AC Milan has confirmed that the England star David Beckham ______the team soon.
#101335
A
has rejoined
B
was going to rejoin
C
rejoined
D
is to rejoin
The town’s drinking-water _____ with prim chemicals at present.
#104183
A
contaminates
B
is contaminated
C
is being contaminated
D
has been contaminated
 I wish I ____ clever enough to work out the ____ geometry problem.
#102986
A
can be; abstract
B
could be; abstract
C
can be; easy
D
could be; easy