People complain that the price of theapartment isgetting.

The doctors and nurses did best to fight Zika Virus(寨卡病毒) in Brazil.

David. we _____ sugar. Could you go and buy some

If penicillin had not been available, many people _____ from sickness or even small wounds.

have any doubts about your health, you’d better______ your doctor at once.