–Someone is knocking at the door. Who ______ it be? --It         be Victor. He has gone to London yesterday.

——Must I park my car behind the building?——No, you needn’t. You _____ park it here. 

I always go to sleep ___________ the light on. 

—A shy boy like John ________ give up a secure job and start his own business!—Yes，nobody had expected that. 

--Shall I take my swimming suit ?--No , you _____ . We will just go hiking in the mountain .