My mother _____ all the cleaning for my family, but recently she has been too busy teaching to do it. 
#99234
A
will do
B
is doing
C
does
D
had done
推荐题目
 If I ____ more about diamond, I ____ cheated by that man.
#102987
A
had known, would not be
B
had known; wouldn’t have been
C
knew; would not have been
D
had known; would never be
—Sorry, sir, your car isn’t ready yet. It _____ in the garage.―That’s all right.
#102997
A
is repaired
B
is being repaired
C
hasn’t repaired
D
has been repaired