Don’t promise anything ________ you are one hundred percent sure.
| A．if | B．after | C．when | D．unless |
—Which do you like , summer or winter?
—I prefer summer.
| A．good | B．well | C．better | D．best |
— Where is Lin Tao? — He _____ to the teachers’ office. He will be back soon.
| A．go | B．has gone | C．has been | D．went |
— Don’t forget _____ your history and math books tomorrow morning. — Thanks. I won’t.
| A．bring | B．to bring | C．bringing | D．brought |
— Why not Jack a toy car for his birthday?
— Good idea! He is crazy about cars.
| A．buy | B．buying | C．to buy | D．buys |
Lisa is a little poor at Chinese. I think she needs _____it every day.
A. practice to speak
B. to practice speaking
C. practice speaking