At the Copenhagen conference, all the countries were called on to do all they could to control greenhouse gas emissions________it was too late.
| A．when | B．after | C．until | D．before |
I can’t remember when turning point occurred exactly, but it might be summer morning when I was in New York.
| A．不填；a | B．a; a | C．the; a | D．a; the |
---Mary, remember to come and see us next time you’re in town .
---__________.
| A．Why? I’ll certainly do | B．Sounds nice |
| C．You’re welcome | D．Sure, I will |
—I need to get changed. —________! We’ll be late for the party.
| A．Oh, come on | B．Go ahead | C．Take it easy | D．It’s a pity |
It’s not what we do once in a while ________ shapes our lives, but what we do consistently.
| A．which | B．that | C．how | D．when |
—He got his first book published. It turned out to be a bestseller.
—When was ________?
— ________ was in 2000 when he was still in college.
| A．that; This | B．this; It | C．it; This | D．that; It |