—Mr. Wang is in Nanjing for a trip.—Oh, really? When ______ he ______ the trip?

It is the first time that Martin has been to the South Pole, ________?

—Nothing wrong with it, ____________?— Yes. The computer says, “Please check this disk before entering data.”

She must be in the classroom,           ?

 _____ to blame him for neglect of duty? The president of the company is his uncle.