1 . Lei Feng was a person who was only too ready to help others, seldom,_________, refusing them when they turned to him.

A．if never

B．if ever

C．if not

D．if any

2 . We were delayed at the airport. _________ we would have been here by lunch time.

A．However	B．Instead
C．Probably	D．Otherwise

3 . These had shown pop music was here to stay, and that young people desperately wanted to listen to radio stations that played it. So the BBC decided to start up its own pop music radio station, Radio 1, and before long Radio Caroline disc jockeys were working there.

A．hopelessly	B．very much
C．hardly	D．unexpectedly

4 . Don't stop ________ you meet with a word you don't understand.

A．at the time	B．each time
C．by the time	D．Sometimes

5 . The incomes of skilled workers went up.         , unskilled workers saw their earnings fall.

A．Moreover	B．Therefore
C．Meanwhile	D．Otherwise

6 . Bicycling is good exercise; _______, it does not pollute the air.

A．nevertheless

B．besides

C．otherwise

D．therefore

7 . It’s our hope that we will play a greater role in the market place and, ________, supply more jobs.

A．however	B．anywhere
C．therefore	D．otherwise

8 . The hurricane damaged many houses and business buildings; ___________, it caused 20 deaths.

A．or else

B．therefore

C．after all

D．besides

9 . People often think they are energetic and healthy and don’t need exercise. _______ , I have to warn that it is completely wrong.

A．However

B．Therefore

C．Otherwise

D．Meanwhile

10 . Jim went to answer the phone.________，Harry started to prepare lunch.

A．However	B．Nevertheless
C．Besides	D．Meanwhile