Last Saturday, we were walking along the street _____ a car suddenly knocked an old man over.A when B while C as D since
—How is your sister now? —______
—What’s the matter with you? —________
—Look at the children in the lake. They are playing happily Let’s _____,too. —Good idea!
—I’m going to Hawaii with my aunt this month for my vacation. —_______
—I’m stressed out. I have so much work to do every day. —You ‘d better rest very often. And it’s good for you to take some ____,I think.