—It’s necessary for us to spend more time with our grandparents.
—________. They won’t see us often after we go to college.
I hope not
I think so
I’m sorry
I’m not sure
------Must I finish my homework now ? ------No, you _________ . You can do it tomorrow .
We be too careful while dealing with these social problems.
——He can write well. ——He_____, but he doesn’t. He’s too lazy.
Rick has learned a lot about Chinese culture _____ he came to China.
--Sorry, I overslept. I forgot to set the alarm. --Your clock ________. Perhaps you should buy a new one.