| A．two month | B．two-month |
| C．two month’s | D．two-months |
| A．to go to school | B．speak English |
| C．go home | D．to the door |
| A．Flying | B．Flies | C．Fly | D．To fly |
| A．litter | B．littering | C．litters |
| A．can | B．can’t |
| C．should | D．shouldn’t |
| A．in | B．on | C．into | D．in to |
| A．isn’t | B．aren’t | C．don’t | D．doesn’t |
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