Beijing is a nice city because more and more trees _______ every spring.

The meeting has begun, I wonder how long ago ___

Interviews were carried out ________ over the telephone，via e－mail or fax or face to face in four cities including Beijing，Shanghai，Guangzhou and Wuhan

The manager has come back from his business trip. Heis asking you for the report.—Oh，my god ! I haven’tfinished it yet. But he____ back at the company tomorrow.

_____ make the cakes, you should prepare some flour and eggs.[ ]