单选题 When an earthquake happens,I think the most important safety ________ is to keep calm.
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单选题 The reason ______ his being late is _____ he didn’t catch the early bus.
单选题 It is required that the money _____ paid immediately.
单选题 You can ____my surprise when I heard the news.
单选题 They felt _______ when they heard the wonderful news.
单选题 ---How did you find your missing pen?---().
单选题 ---- They have done a good job----- _________. _________.
单选题 I didn’t hear the phone I _____ asleep.
单选题 Once _____, the show can never be forgotten.