It’s wise _______ you _______ your child at home alone while it’s also very important _______ him to learn to protect himself.
My sister is only two years old, and I have to _____ her on Sunday.
—What are you doing for your vacation? —________________________.
—I’m tired and stressed out. —You should ___________.
—_________is very interesting to swim in the river in summer,but it’s dangerous.
Vegetables are goodour health, so we should eat them every day.