— What’s wrong? You look really stressed out.
—I ________ the whole week preparing for my graduation paper.
A.work B.have worked
C.have been working D.worked
______the damage is done, it will take many years for the farmland to recover.
A.Until
B.Unless
C.Once
D.Although
If you have any doubts about your health, you’d better______ your doctor at once.
A.convince B.consult
C.avoid D.affect
Skills like critical thinking and analysis ________ be found on the Internet, because they must be acquired in the context of facts.
A.can’t B.needn’t C.mustn’t D.shouldn’t
In Britain today women ________ 44% of the workers and nearly half the mothers with children are in paid work.
A.go up B.bring up C.hold up D.make up
Every life has its ups and downs, but having a(n) ________ attitude to life has been found to be very important.
A.convenient B.optimistic C.impressive D.negative
