________ do you update your micro blog (微博)? —Twice a week.

Come on, let’s go for a drink. —Sorry. With so many problems _____ my mind, I can’t take a break.

Hurry up! The black clouds ______that it isgoing to rain soon.

Jack is late again It isofhim to keep others waiting

housing prices are going up madly, itis almost certain that the local government focuses not on improving people’slife but on trying to earn money by selling state land