There is no doubt ______ they will be happy to accept the job.
A.what B.that C.whether D.if
Do take measures to protect these old traditions and customs before they _____.
A.die out B.die away C.die off D.die down
You should _____ your spare time better if you want to be more excellent.
A.take B.cost C.employ D.improve
I can’t see the words on the blackboard. Your head is ________.
A.on the way B.in a way C.by the way D.in the way
If George keeps on working so hard, he’ll ______ sooner or later.
A.break off B.break up C.break out D.break down
Many scientists have believed that there may be a ______ of life on the Mars.
A.signal B.sign C.mark D.sigh
