จงทําให้เป็นประโยคปฏิเสธในรูป Present perfect tense

Example : She hasn’t swum in the swimming pool now.

1. Susan ………………….. ………………… KFC . ( eat )

2. My brother ……………………… ………………………… car. ( buy )

3. My sister ……………………… ………………………. since six o’clock. ( cry )

4. The dogs ……………………… …………………………. under the tree . ( sleep )

5. I …………………. ………………….. songs . ( sing )