【题目】When will the meeting be over?

【题目】So _______life will continue to live on the earth depend on whether this problem can be solved.

【题目】Water，which seems so simple and common，is ________ makes life possible.

【题目】I just wonder ________ that makes him so excited.

【题目】What can the man do?

【题目】What’s John doing now?

【题目】It is obvious to the students ______ they should get well prepared for their future.

【题目】_______ many scientists believe is ______the continuous presence of water benefits the earth a lot.

【题目】What does the woman suggest the man do?

【题目】What do we know about the sisters?