Question

--- What about yesterday’s homework, Amy?
--- I found ____ hard to finish all the exercises

1. A.
   it
2. B.
   it’s
3. C.
   that
4. D.
   that’s

Answer 1

A
考查find的用法。find后可跟宾语从句，也可跟宾语+宾补结构。it’s是it is的缩写，而found是过去时，故排除B项；that只起引导从句的作用，没有实际意义；排除C；it作found的形式宾语，真正的宾语是后面的动词不定式。故选A。