The careless boy lost his key, _______ he had to wait for his mom in the cold.
下列各组字母中全部是元音字母的是 ____。A. a, e, o, r B. a, i, u, e C. o, u, e, n
— 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