Oh，no!We are too late．The train _____．
Well，we'll have to catch the next train to Beijing．（ ）
A．leavesB．leftC．will leaveD．has left
In summer milk will quickly go bad_____ it is put into a fridge.
| A．though | B．unless | C．because | D．once |
I still remember my first teacher we haven’t seen each other for many years
| A．for | B．because | C．since | D．though |
I’m sorry I’m very busy now.If I ______ time, I ______ come to see you.
| A．have, would | B．had, will |
| C．were, will | D．have, will |
If Tom_________ the game, he will be the__________.
| A．win; winner | B．will win; winner |
| C．wins; winning | D．wins; winner |
--- Hurry up! The bus is coming.
--- Wait a minute.Don’t cross the street the traffic lights are green.
| A．after | B．until | C．while | D．Since |