He _______ a lot of time on research ______ agriculture.A spent into B spent of - 超级试练试题库

He _ a lot of time on research agriculture.A spent into B spent of

题目

He _______ a lot of time on research ______ agriculture.A spent into B spent of

答案

①He spent a lot of time on research into agriculture.他花了许多时间在农业研究上.
②He spent a lot of time on research of agriculture.他花了很多时间研究的农业.
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