—How many students are there in your school?
—_______ students, I think.
| A．Thousand of | B．Three thousands |
| C．Three thousand | D．Three thousands of |
I want to buy a bike. At last I decided ____ a black one.
| A．to buy | B．buy | C．buys | D．buying |
Where____ he ____ for his next vacation?
| A．does, leave | B．is, leave |
| C．is, leaving | D．is, leaveing |
I have a sore back. You should _____ down and rest.
| A．to lie | B．lying | C．lie | D．lied |
It’s a good habit ____ breakfast every day.
| A．had | B．have |
| C．has | D．to have |
Tony ____ before exams.
| A．is stress out | B．stressed out |
| C．feel stressed out | D．is stressed out |