15—When Lily fainted, we could have turned to your father for help—Yes, sending her to hospital _________ necessary

24NotuntilIcompletedtheform______thathalfquestionswerenotrelevanttome

f there is no scientific proof secondhandsmoke causes cancer, there is no reason why nonsmokers should be forced to takethis risk.

My grandfather spends most of his time _______ because he loves nature

下列各句中,没有语病的一项是(　　)