Thereare still many problems which need to be solved before we are ready for a l-组卷网

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There are still many problems which need to be solved before we are ready for a long stay on the Moon. （同义句转换）
→There are still many problems________before we are ready for a long stay on the Moon.

2023高二·全国·专题练习

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正是因为她的耐心，她成为第一个解决这个问题的学生。（强调句）
It was ________ she became ________ the problem.

There are still many problems _______________ before we are ready for a long stay on the Moon.
在我们准备在月球上长住之前，还有很多问题仍需要解决。

所以，在未来数百万年中,生命能否在地球上延续,取决于这个问题能否得到解决。
So whether life will continue on the earth for millions of years to come will _____ whether this problem can be _____.

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