She will tell us why she feels s
o strongly that each of us has a role _______ in making the earth a better place to live on.
| A．to have played | B．to play | C．to be played | D．to be playing |
Please ______ your sister to bring the ticket for the concert.
| A．remind | B．remember | C．warn | D．let |
Be careful ! The slightest spark could ______ the fireworks.
| A．set about | B．set off | C．set out | D．set up |
. The police are offering a $ 60,000 _____ for information about the killer.
| A．price | B．prize | C．award | D．reward |
People generally think that smoking is a bad ______ .
| A．custom | B．habit | C．behavior | D．action |
We invited her to dinner but she didn’t even bother to _______ .
| A．turn in | B．turn up | C．turn on | D．turn down |