—Take this medicine three times a day，Tom!

—Do I have to take it？It ________ so terrible.

A．is tasting B．is tasted

C．tastes D．has tasted

—When did the computer crash?

—This morning，while I ________ the reading materials downloaded from some websites.(2012·福建)

A．have sorted B．was sorting

C．am sorting D．had sorted

The fact that so many people still smoke in public places ________ that we may need a nationwide campaign to raise awareness of the risks of smoking.(2011·江蘇)

A．suggest B．suggests C．suggested D．suggesting

(2013·湖南，26)If nothing________，the oceans will turn into fish deserts.

A．does B．had been done

C．will do D．is done

—Can I ask you a rather personal question?

—________

A．Thanks，take it easy. B．Thanks，help yourself.

C．Of course，go ahead. D．Of course，why not?

—Your house is very comfortable.

—________.

A．Thank you

B．Oh，you are joking

C．Oh，no，not at all

D．Not as comfortable as yours

—Don't worry，Mum.The doctor said it was only the flu.

—________！I'll tell Dad there's nothing serious.(2012·江蘇，24)

A．What a relief B．Congratulations

C．How surprising D．I'm so sorry

He began to take political science ________ only when he left school.(2013·湖北)

A．strictly B．truly C．carefully D．seriously