Take care during the holidays! Drinking too much can ____ heart disease and cause high blood pressure.
By the time Jack returned home from England, his son _______ from college.
——Do you know where David is? I couldn’t find him anywhere. ——Well, he_______ gone far—his coat’s still here.
Do you think that bridge _________2,000 metres long? It doesn’t appear so long.
—If he______there were poisonous snakes in the mountain, he would not have camped there. —Luckily, he was found relatively quickly and_______to the local medical center.
________ is known to us all is that the old worker, for _______ life was hard in the past, still works hard in his seventies.