—Tommy is planning to buy a car.— I know. By next month, he ____ enough for a used one.
#100508
A
saves
B
saved
C
will save
D
will have saved
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Edward, you play so well. But I ________ you played the piano.
#104527
A
didn’t know
B
hadn’t known
C
don’t know
D
haven’t known
—Will you please repeat your idea?—Certainly. But I think it convinced you ________ your attention.
#101250
A
didn’t pay
B
aren’t paying
C
don’t pay
D
weren’t paying
The country life he was accustomed to________ greatly since 1992. 
#101373
A
has changed
B
change
C
changing
D
have changed