When is National Public Memorial Day(国家公祭日) —On December 13th. And it can us of the hard days in the past.

Mum, I’m thirsty. I want to have something to drink.—What about some _______

In time we reached a stagewe had more young readers than old ones

It’s the fourth time that heavy smog has hit the city this month.— It’s high time we _______ measures to fight airpollution.

Have you ever seen Peter recently? –YesHe__________ me to ask you how you___________ along with your new job these days