---Everyone was at the party except you. What happened? ---I      after Mike, my pet dog, at home. He was ill.
#101463
A
have looked
B
was looking
C
would look
D
had looked
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—My dear, you ______ things about. Look, what a mess in the room! —Sorry, Mom.
#99063
A
have always thrown
B
always throw
C
are always throwing
D
always threw
—I phoned you at 9 this morning but got no answer.—I am sorry. I _____ the bell. I _____ in the garden.
#101559
A
didn’t have heard, must have been
B
didn’t have heard, must be
C
didn’t hear, must have been
D
didn’t hear, must be
—How long            in America?—Two years. I came back last month.
#101175
A
have you studied
B
do you study
C
would you study
D
did you study