We have realised that ____ is much that can be done to help improve our environment.

 I made a call to my parents yesterday, but _______ of them answered it.

Mr. Zhang gave all textbooks to all the pupils, except___________ who had already taken tem.

This project requires close teamwork.   Will be achieved unless we work well together.

He is considered to be a gifted manager, ____ with a quick mind and good humor.