共50条信息
________ is known to us is that lung cancer is caused partly by smoking too much.
--- What has made him look like lacking sleep?
--- _____ his wife is ill and he has to get up several times a night to attend to her.
_____ she said suggested that she hadn’t decided ______ to go or not.
—What is upsetting you, dear? —______ it is necessary for us to move our home to the city now.
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