| A．sing | B．sings | C．singing |
| A．Anne’s | B．Anne | C．Anne is |
| A．/,at | B．on,on | C．on,at |
| A．May | B．Can | C．Am |
| A．take | B．took | C．taking |
| A．Mary's mother | B．mother of Mary | C．Mary 's mother's |
| A．old | B．tall | C．heavy |
| A．What | B．Where | C．Which |
| A．big;stronger | B．bigger;stronger | C．bigger;strong |
| A．bought | B．buys | C．is going to buy |
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