As long as the laws of nature ______, there will be tornadoes.A．existB．are exist
题型：不详难度：来源：
As long as the laws of nature ______, there will be tornadoes.| A．exist | B．are existing | C．will exist | D．existed |
|
答案
| A |
解析
| 考查状语从句的时态。在条件状语从句里，用一般现在时代替将来时，主句用将来时。 |
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