D.to the place
整个句子是祈使句Put the books back .,祈使句中又有定语从句to the place they belong 和状语从句after you have finished them.
这里不能选where.belong to 是一个固定短语,不能省去to.
D.to the place
整个句子是祈使句Put the books back .,祈使句中又有定语从句to the place they belong 和状语从句after you have finished them.
这里不能选where.belong to 是一个固定短语,不能省去to.