22.Many trees should be planted on the mountains. A.thousand B.thousand of C.thousands D.thousands of 查看更多

 

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Many          trees should be planted on the mountains.

A.thousand       B.thousand of          C.thousands              D.thousands of

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Many ________ trees should be planted on the mountains.

[  ]

A.thousand
B.thousand of
C.thousands
D.thousands of

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