He ______ his cartoon books to read but didn’t _______ one at last, so he asked his mother for help.

A.looked for; found

B.looked for; find

C.found; look for

D.find; look for

答案及解析： B

解析：

分析句意后，不难看出本题主要是考查“寻找”和“找到”的词义辨异。很显然，前一空表示的内容是“寻找”，而后一空表示的内容为“找到”。