-The light in the office is still on.
-Oh, I forgot __________.
| A．turning it off | B．to turn it off |
| C．turning it on | D．to turn it on |
David didn’t give up ______ he had failed in the experiment four times．
| A．if | B．while | C．though | D．since |
—Look! That teacher is explaining something to her students again and again!
—_______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?
—______. You see, I’m interested in geography these days.
| A．All | B．None | C．Both | D．Each |