а) 48*5/17+48*12/17
б) 55*7/11-55*6/11

Помогите пожалуйста.

Раскрыть скобки, употребляя глаголы в Present Continuous. (NOW)

1) My book (to lie) on the table.

2) They (to work)

3) The doctor and her patient (to talk)

4) We (to cook) dinner. My mother ( to make) a salad.

5) A young man ( to drive) a car. He ( to listen) music.

6) My grandfather (to read) a book.

7) The pen (to lie) on the floor.

8) You ( to have) a break/

9) She still (to sing).

Можно написать не всё предложение а открытые скобки.