—They are quiet, aren’t they?
—Yes, They are used ________ at meals.
A．to talkB．to talking
C．to not talkingD．not to talk
________ around the beautiful campus, they were taken to the classroom to observe a maths lesson.
A．To be shownB．Having shown
C．Having been shownD．To show
I would rather you _________ at home tomorrow.
A．to stayB．stayed
C．stayD．had stayed
Which of the following sentences is not correct?
A．I find it worthwhile to take part in the anti-smoking campaign.
B．The new house really didn’t worth so much money.
C．His suggestion is worthy of consideration.
D．He is a gentleman worthy to be respected.
After the destructive earthquake ________ people needed badly __________ blankets, as it was very cold at night.
A．that; areB．what; was
C．that; isD．what; were
________ for a long time, but he tried his best to catch up with his classmates.
A．Having been illB．Though he was ill
C．Being illD．He was ill
