Our teacher often asks us time．（ ）
| A． |
not waste |
B． |
don't waste |
| C． |
not to waste |
D． |
doesn't waste |
Our teacher often asks us time．（ ）
| A． |
not waste |
B． |
don't waste |
| C． |
not to waste |
D． |
doesn't waste |
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