------It's too cold this morning. I can't get my car__.------ Have you tried _____ the tank with hot water.
Let’s clean the classroom, _______?
Children________in public very often.
I was really anxious about you. You___home without a word.
—— What happened to the young trees we planted? —— The trees______well, but I didn’t water them.
The traffic light is red, so I______stop my car.