He ____(put) the book on the bookshelf,but he ____(can not) find it now.

问题描述:

He ____(put) the book on the bookshelf,but he ____(can not) find it now.

第一个空:put
因为原题后面有“now”
说明前面应该是一般过去时,put的过去式和过去分词都是put
第二个空:can't
因为有“now”用一般现在时