1.this math problem is[ ]that one.
问题描述：
1.this math problem is[ ]that one.
A.not so easyas B.more easy than C.as easier than D.easy than
2.His friend find[ ] him everything that has happened
A.it necessary B.that necessary to C.necessary it to D.necessary to tell
答
1.A
解析：easy 的比较级是easier,所以B是错的；as 的话后面不能用比较级,要用原形,所以C错了；than 前面要用比较级,所以D错了
2.A
解析：固定句式.find it + adj.+ to do