1. Don’t (let) _____let___your child play with a knife.
2. Mary (cook) _____is cooking_________in the kitchen at present.
3. Where are you, Peter?I(be) _____am____upstairs, Mom.
4. Jimmy(climb) _____climbed_____the apple tree yesterday. He (fall) __fell___and (break)______broke_____his leg.
5. Look! He (run)_____is running____down the stair. He may break his arm.
6. Mai has a ______toothache_____. She (go)___is going_______to the dentist tomorrow.
7. Hoa (wash)______washes______her hair three times a week.
8. Last Monday, my mother(have)_______had______a bad pain in her stomach.