Question

I think _______ is meaningful to help other people

1. A.
   it
2. B.
   this
3. C.
   that
4. D.
   /

Answer 1

A
考查宾语从句。句意“我认为帮助他人时很有意义的。”think后跟宾语从句，省略了引导词that。It is+adj. to do sth.是固定句型。故选A。