—Our teachers and parents always warn us not to smoke.—Yes, actually, the risk of heart disease is a powerful argument ____ smoking.
______forsometimeafteratiringdayisveryenjoyableandexcitingformeinsummer. ASwimB.SwimmingC.Goswimming D.Toswim
We believe scientists will ________a way to solve the problem of air pollution.
Hiswife______hischildrenwasinvitedtotheparty.
—What’s the matter _______Mike? He is wet through. —His car ran _______the river.
Pleaseask________nottoskateonthethinice.It’sverydangerous.