When something is on fire, people throw sand on it to put out the fire. The main use of the sand is to _________.
| A．protect the thing on fire |
| B．add weigh to the thing on fire |
| C．keep the air away from the thing on fire |
| D．lower the temperature of the thing on fire |
－This is your eraser. Here you are.
－Thank you，Mr. Hu.
－.
A. Thank you，too
B. That’s all right
C. All right
Please call us _____2388977．
| A．at | B．on | C．in | D．with |
This is ____ English book and that is ____Chinese book．
| A．a；an | B．an; a |
| C．the；an | D．an; the |
Look! Some fish ______ on the table and some apples ______ in the box.
A. is, are B. are, is C. is, is
Drinking more water is good ______ your health.
A. for B. at C. of