— Who’s that man over there standing in the garden? Is it Mr. White?—It __________ be him. He has gone to Shanghai on business. 

 --- What’s the weather like? --- Pretty hot and wet in the summer, but it _____ be quite cold in the winter. 

That children ______meet with setbacks is a matter of necessity as they_____, so parents don’t worry about that.

It is recommended that the project ________ not be started until all the preparations have been made.

— Can I go to the movie, Mum?— Certainly. But you _______ be back by ten o’clock.