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11.She isn’t clever enough to answer these questions.
=>If
12.Lan works so hard that she is exhausted at the end of the day.
=>If
13.Unless she reveals the truth, everything will be ok.
=> If
14.If he doesn’t come home late, we won’t get worried.
=> Unless
15.If the dog weren’t badly treated, they wouldn’t leave the home.
=> If
16.It’s so cold so you can’t go out now.
=> If
