—Jimmy，it’s time to go to bed．
—Oh，I won’t do that________I finish my homework．
| A．if |
| B．before |
| C．after |
| D．when |
—________ you open the window, please?
—Yes, I can.
| A．May | B．Need | C．Must | D．Can |
There are two dogs in my family. One is white,_____________ black.
| A．another | B．others | C．the other | D．other |
I am _______________than my mother, so I am very happy.
| A．tall | B．taller | C．tallest | D．the tallest |
—________ is your favorite sport?
— Swimming.
| A．What | B．Who | C．Whose | D．Which |
Our classroom ________ very big and clean. We enjoy studying there.
| A．am | B．is | C．are | D．be |