问题描述:
帮忙写一下这几个词的过去式和过去分词
1.let
2.make
3.find
4.ride
5.learn
6.think
7.know
8.understand
9.run
10.speak
1.let
2.make
3.find
4.ride
5.learn
6.think
7.know
8.understand
9.run
10.speak
问题解答:
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