I won’t call you, ________ something unexpected happens. A．becauseB．whetherC．unl
题型：不详难度：来源：
I won’t call you, ________ something unexpected happens. | A．because | B．whether | C．unless | D．while |
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答案
| C。 |
解析
| 由空档前后的语境逻辑可以推出该空表示“除非”，因此应填unless引导条件状语从句。 |
举一反三
You will be successful in the interviewyou have confidence. | A．before | B．once | C．until | D．though |
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Most birds find it safe to sleep in the trees, but ________they have eggs or young chicks, they don’t use a nest. | A．why | B．how | C．unless | D．where |
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Small sailboats can easily turn over in the water ______ they are not managed carefully. | A．though | B．before | C．until | D．if |
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Leave your key with a neighbor _______ you lock yourself out one day. | A．ever since | B．even if | C．soon after | D．in case |
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My parents live in a small village. They always keep candles in the house_____there is a power out. | A．if | B．unless | C．in case | D．so that |
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