The teacher told us that light ________ faster than sound．

A．travelled

B．had travelled

C．is travelling

D．travels

I don't think it is ________ taking the trouble to explain the question to him．

A．worth

B．worthy

C．worth of

D．worthwhile

Ten years ago, the population of our village was ________ that of theirs．

A．twice as much as

B．twice as large as

C．as twice large as

D．as twice much as

They have no idea at all ________．

A．where he has gone

B．where did he go

C．where has he gone

D．where does he go

Eve was late for class again．She ________ earlier．

A．should get up

B．must get up

C．need to get up

D．should have got up

It is feared that it will be many years ________ the two countries ________ make peace．

A．when; at war

B．before; in war

C．until; on war

D．before; at war

You have done so much for me and I really don't know what to do for you ________．

A．in return

B．in turn

C．in award

D．instead

________ he didn't help me with my work．Instead, just ________．

A．In a way; in my way

B．On a way; on the way

C．In the way; on the way

D．By the way; on my way

Mr．Smith is ________ a teacher．He is also your good friend．

A．more than

B．only

C．no more than

D．not more than

His family don't like the second-hand car, ________ is very high．

A．the price of which

B．which price

C．it's price

D．the price of that