---Waiter! How soon can I get my food? I just have half an hour left before my train leaves.--- It ______ be ready in five minutes.A. may B. should C. could D need
People in China used to keep records by putting a number of stones together, ___?
--Can you tell me anything about the fire ___ last night?----I’m afraid, ____.
We have been good friends for years.And we must ___ the friendship between us.
--Hello, is Mr. Smith at home?---Sorry, but he _____.
--Don't be so disappointed.I’m sure that you can do better in the next exam. --Yes, but I ____ this time.