It’s necessary _________ us _________ more trees in spring every year.
— When shall we leave for China? — We won’t we have visited all the places of interest here.
— Which do you think is ______ subject, math, music or art?[ — Art, I guess.
Davy ________ his homework at home yesterday.
It _________ outside. You’d better take an umbrella with you. A.rains B.is raining C.rained
My parents want to go ______ on vacation.