No one can walk the wire in the air without a bit of fear unless ___ very young.
A.having trained B. trained
C. to be trained D. being trained
Neither the old lady nor her cats ___ out of the house since her husband passed away last month.
A.was stepping B. have stepped
C. stepped D. has stepped
After supper, he usually stood near the window, ___ he could see the tower, the tallest building of the town.
A.from which B. from where
C. on which D. on where
Jack is believed _____ his goal, who is said ____ the stage.
A.to achieve; to leave
B. having achieved; to have left
C.to achieve; having left
D. to have achieved; to have left
I’m not sure ___ I can learn at present; but I’m sure it will be something ___ I might use in the future.
A.That; what B. what; /
C. which; that D. /; that
I wonder if John has forgotten my number. I ___ him to call for the past two hours.
A.have been expecting B. have expected
C. have been expected D. expected