---In recent years, problem of global warming had been very serious.
---That is right. People are facing number of natural disasters now.
| A．\; a | B．\ ;the | C．the; a | D．a ;a |
—Keep ____ in mind that you have to be home by 10 o’clock.
—Ok, I will.
| A．it | B．this | C．one | D．these |
—Did you listen to Mr.Jackson’s lecture ?
— Yes，I have never heard a _____ one.
| A．more exciting | B．more excited |
| C．most exciting | D．most excited |
He is a worthy leader, who never ______ his power which is given by people
| A．uses | B．abuses | C．ignores | D．forces |
—Who takes _____ charge of the work?
—It is in ____ charge of Lily.
| A．a; / | B．/; the | C．/; / | D．the; the |
—I’m afraid I can’t go to your party; I have lots of things to do.
—________.
| A．Take it easy | B．No problem |
| C．So what | D．What a shame. |