If the weather had been better, we could have had a picnic. But it _______all day.A rained B rains C has rained D. is raining
The air in big cities _____very dirty by factories.
The number of people invited _____fifty, but a number of them _____absent for different reasons.
All but one ____here just now.
Father went to his doctor for ____about his heart trouble.
_____turn green in spring.