A：My mother does.
B：My mother is.
C：My mother did.
1）Where did you go?
2）What did you do there?
3）What did you see or hear there?
4）Who played with you?
5）Did you have a good time during the summer holiday?
6）How was your summer holiday?
My summer holiday
大量极细微的尘粒、烟粒、盐粒等均匀地浮游在空中，使有效水平能见度小于10KM的空气混浊的现象叫霾。近期我国不少地区把阴霾天气现象并入雾一起作为灾害性天气预警预报，统称为“雾霾天气”，据此回答下列各题。
