| Is there a discount ______ computers in your shop? I plan to buy ______. |
A. for / a B. on / one C. with / a D. of / one |
| You should try your best to remember in the class. |
A. nothing useful B. useful something C. useful everything D. everything useful |
| We stopped , but heard nothing from the room. |
A. to listening to B. to listen to C. listening D. to listen |
| —Which floor do you live _________? —The first floor. I live _________ Room 112. |
A. in / on B. on / on C. on / in D. in / in |