3道简单英文!简单说下原因

题目

3道简单英文!简单说下原因
1,fine——looking food doesn"t______ taste good.(necessary) 2,peter is the tallest boy in class.he is taller than ____in class A,any student B,any other student C,any students D,other student 3,floods are disastrous and _____(dead)

答案

necessarily (not necessarily 不一定）
B 其他学生（不包括他）
deadly 致命的