| A．Mom, they are just right. | B．Mom, they are too expensive. | C．Mom, that's too expensive. |
| A．It's a book about London. | B．Tell me more about the book. |
| A．Lingling has got a fever. | B．Lingling had a chocolate. |
| A．I read books. | B．I helped Mum. |
| A．I like flying a kite. | B．I want to fly a kite. |
| A．Were you at home yesterday? | B．Are you at home? |
| to about in at on |
| A．talk | B．take | C．took |
| A．walking | B．walked | C．walks |
| A．drank | B．drinks | C．drink |
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