—____ your sister know Tom?—No, she ____.A. Do; don’t B. Does; doesn’t C. Do; do
Don’t forget _____ the door when you leave.
Don’t drink ____ water. There is no washroom on the bus.
____ is good _______ your health.
After hard work, he felt __________ tired to walk.
— Look at these flowers. —__________ beautiful they are!