He bought another new car. He _____ a lot of money.
| A．must earn | B．must have earned | C．can earn | D．could have earned |
29. Please ______ your sister to bring the ticket for the concert.
| A．remind | B．remember | C．warn | D．Let |
28. Be careful! The slightest spark（火花）could ______ the fireworks.
| A．set about | B．set off | C．set out | D．set up |
27. The police are offering a $ 60,000 _____ for information about the killer.
| A．price | B．prize | C．award | D．Reward |
26. People generally think that smoking is a bad ______ .
| A．custom | B．habit | C．behavior | D．Action |
25. We invited her to dinner but she didn’t even bother to _______ .
| A．turn in | B．turn up | C．turn on | D．turn down |