21.I didn t know your mobile phone number；otherwise l __ you

the moment I got to Washington.

A.had rung B.would ring C.have rung D.would have rung

22.As they are retired.Mr. and Mrs.Scott prefer a house in the

country to their remaining years there.

A.spend B.spending C.spent D.spends

23. by his grandparents，Jimmy wasn t used to living with his

parents.

A.To bring up B.To be brought up C.Brought up D.Being brought up

24.Please remain .until the plane has come to a complete stop.

A.to seat B.to be seated C.seating D.seated

25.While watching television， .

A.the doorbell rang B.the doorbell tings

C.we heard the doorbell ring D.we heard the doorbell tings

26. ，the pay isn t attractive enough，though the job itself is

quite interesting.

A.Generally speaking B.On the contrary

C.In particular D.To be honest

27.The robber had escaped and was nowhere to be found when the

Police .

A.arrived B.had arrived

C.arrive D.have arrived

28.Professor Wilson keeps telling his students that the future

to the well—educated.