| A．at | B．in | C．for |
| A．teach | B．teaches | C．teachs |
| A．it | B．its | C．it’s |
| A．Is , isn’t | B．It , is | C．Is , is |
| A．horse | B．cow | C．cat |
| A．Certainly not. |
| B．Certainly. |
| C．No, it isn’t. |
| A．How old are you? |
| B．Where are you from? |
| C．What is this? |
| A．drinking it’s | B．drinking their | C．drink their |
| A．running | B．climbing | C．swimming |
| A．The swing | B．Does swing | C．The swinging |
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