单句语法填空
1．We ensured ourselves against possible disappointment.
2．Let me congratulate you on your achieving your goal.
3．The security system will not permit you to_enter (enter)without the correct password.
4．It is known to prohibit smoking (smoke)in public places.
5．You can't imagine what great trouble the boy had persuading (persuade)his father to give up smoking!
6．Personally I can't tell the differences (difference)between them.
7．I'm not accustomed to getting (get)up so early to do morning exercise.
8．How time flies！It's time for us to_say (say) goodbye.
9．It is high time that you made/should_make (make)up your mind.
10．It's no use shouting (shout)at him—he's deaf.
