If we _________ now to protect the environment, we’ll live to regret it. A．hadn’
题型：不详难度：来源：
If we _________ now to protect the environment, we’ll live to regret it. | A．hadn’t acted | B．haven’t acted | C．don’t act | D．won’t act |
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答案
| C |
解析
此处if引导一个真实条件句。在真实条件句中，谓语动词涉及到将来动作时，要用一般现在时代替一般将来时，所以用一般现在时，故C正确。句意：如果我们现在不采取行动保护环境，我们会遗憾一辈子。
【考点定位】本题考查动词时态。 |
举一反三
When I first met Bryan I didn’t like him, but I ________ my mind. | A．have changed | B．change | C．had changed | D．would change |
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During the last three decades, the number of people participating in physical fitness programs___ sharply.| A．was increasing | B．has increased | C．had increased | D．will be increasing |
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The water supply has been cut off temporarily because the workers ____ one of the main pipes.| A．had repaired | B．have repaired | C．repaired | D．are repairing |
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We very early so we packed the night before.| A．leave | B．had left | C．were leaving | D．have left |
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---Where are your parents?
---They are in the kitchen, they ______the dinner for the party the whole day.| A．are preparing | B．have been prepared | | C．have been preparing | D．were preparing |
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