Today, we’ll discuss a number ofcases ____parents have much difficulty in communicating with their children.

The grass seeds which were sown in Spring are beginning to ________.

You _____ across the road without looking round; you _____ down by a car.

(2013·河北高三教学质量检测)Many people tried to leave the country, ________ there was much violence and a serious shortage of food supply

Can people drive after drinking a glass of beer—No. According to the law they _________.