26. －Hello, Mr. Wang. Must we wear the school uniform tomorrow?
－You ___________. Only on Mondays. Tomorrow is Tuesday.
| A．don’t have to | B．mustn’t | C．have to | D．Must |
Tom, turn down the music. Why you make such a big noise while your baby sister is sleeping?
| A．must | B．would | C．should | D．may |
．It rained for two weeks, completely _______ our holiday.
| A．ruined | B．ruin | C．to ruin | D．ruining |
It is known to us all E-mail is______ efficient than sending a fax.
| A．much | B．many | C．more much | D．much more |
．His family members gave some examples of _________ his drinking and smoking had affected the family.
| A．that | B．what | C．how | D．whether |
We hope the measures to control prices, _____are taken by the government, will succeed.
| A．as | B．when | C．since | D．after |