相关试题
—What are the school rules？
—We ________ arrive late for class．
| A．aren’t |
| B．don’t |
| C．can’t |
| D．don’t have to |
—________ I finish my homework now？
—No，you ________．Your work is over today．
| A．Can’t；must |
| B．Must；don’t have to |
| C．May；couldn’t |
| D．Couldn’t；could |
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