The mother who lost her son insisted that the careless driver for the traffic accident ___ yesterday .
—You have just 15 minutes to get to the airport.—All right, I guess I can ________.
Let’s make good use of our energy and_________ wasting water, electricity, paper and so on.
He needs to improve his skills if he __________ the gold medal at the 2016 Olympics.
The teacher warned ________ was caught ________ during the test would be punished.
If he ________ quietly as the doctor instructed, Ronald would not suffer so much now.