— How many students are there in your school?
—______ students, I think.
| A．Thousand of | B．Two thousands | C．Two thousand | D．Two thousands of |
David didn’t give up ______ he had failed in the experiment four times.
| A．if | B．while | C．though | D．since |
一Look! That teacher is explaining something to her students again and again!
一_______teacher she is!
| A．How patient | B．What patient | C．How a patient | D．What a patient |
Lucy liked all the dresses there，but she took the ______one to save as much money as possible for Project Hope.
| A．cheaper | B．more expensive | C．cheapest | D．most expensive |
Mandeep can go to school now. UNICEF has paid for her ______.
| A．education | B．vacation | C．competition | D．invention |
—Here are three books on history. Which one would you like to borrow?
一 ______. You see，I’m interested in geography these days.
| A．All | B．None | C．Both | D．Each |