wall hung a picture,__________colour is blue

Most countries of the world have records of the great natural catastrophes that before.

May I take the magazine out of the reading room—No, you can’t. You _________ read it here. It’s the rule.

When is the Spring Festival this year—It’s______February 19th. But people celebrate it______the evening of February 18th ．

I don’t know _____ or not he will come . _______ he comes , I will call you .