—______do you usually use the computer_______?
— Playing games．
A.Why; for B.What; to C.Why; to D.What; for
— ________ does Kate chat online with her friends?
— Twice a week．
A.How long B.How often C.How soon D.How far
—I feel tired and sleepy.
—Why not stop_____?
A.to relax B.relaxing
C.resting D.to work
—You can’t smoke here. —Sorry, I _________the sign.
A.haven’t seen B.didn’t see C.don’t see D.won’t see
The maths problem was not difficult, but he didn’t know ______.
A.what to do it B.how to do it
C.how to do D.to do what
The water was all over the floor and I nearly ________.
A.moved down B.moved up C.fell from D.fell over
