完成句子（共20空；每空0.5分，满分10分）
He decided to devote himself to the protection of the Changjiang River.
He decided to be ________ to __________  the Changjiang River.
It’s a good idea for you to _________  ___________  ______  ______(充分利用) micro-blogging(微博) to help improve your business if you are a business man or woman.
John will ______  _______ of (负责)the next meeting.
He is always ___  ___  __(找茬)other people though he doesn’t do his own work properly.
This book is different from _____  _____  ____ I read(我昨天读的) last night.
I’ve lost my umbrella and Mary has lost her umbrella , too.
I’ve lost my umbrella and ________  _______  ________.
The mid-term exam is coming soon. The students are busy _____  _____  ___ (准备) it.