It is polite ______ you to give seats to the elderly.
下列字母都是元音字母的是________。
-Did you buy any gifts your family in the gift shop?-No, I didn’t. The things in it were so expensive.
-What did Tom do last Sunday?-He flowers in the garden with his father.
Lily often at school early, but this morning she late.
Last summer vacation, we many photos when we had a trip to Dalian.