If you sleep less than 7 hours a day, you are more to catch a cold.
| A．possible | B．certainly | C．probable | D．likely |
Why is it _____ he can’t get along well with his classmates?
| A．/ | B．this | C．that | D．it |
Mary wrote an article on _____ the team had failed to win the game.
| A．why | B．what | C．who | D．that |
At last, we found ourselves in a pleasant ark with trees providing shade and _____
down to eat our picnic lunch.
| A．sitting | B．having sat | C．to sit | D．sat |
_____ into use in April 2000, the hotline was meant for residents reporting water and
heating supply breakdowns.
| A．Put | B．Putting | C．Having put | D．Being put |
Look out! The ceiling _____ fall down.
| A．is to | B．is going to | C．is about | D．will |