1. The children are ___ the holidays.

5. We should be careful __ public property.

　 E. look down on(upon) /look back upon　 / look forward to

4. Be more careful ___ your work.

3. Be more careful ___ the vase; it’s valuable.

2. The public was warned to be careful __L rats.

1. You’d better be careful ___ your pronunciation.

8. Tractors have now ___ horses and cows in most villages.

　 D. be careful with / be careful of / be careful about

7. ___, please. We are about to start.

6.My brother is ill, and I’ve come to ___ him.

5. The manager will be away for a month. Who will ___?