| A．cm | B．m | C．mm |
| A．long and long |
| B．shorter and shorter |
| C．longer and longer |
| A．big cities |
| B．the biggest city |
| C．biggest cities |
| A．You should wash your hands before eating. |
| B．You should drink more pop |
| A．You shouldn't eat too much chocolate. |
| B．You shouldn't eat too much fast food. |
| A．You should stay up late. |
| B．You should go to bed early. |
| A．Does |
| B．Did |
| C．Were |
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