—As a teenager,our son should have two or three hobbies to be really happy.—________,but how can he afford the time with so much homework every day?
The development of industry has been ____gradual process throughout _____ human existence, from stone tools to modern technology.
Sun Yang,_Olympic and world swimming champion of China, has received_ indefinite ban from competition following his seven-day detention for driving without a license.
Although it doesn't look like_,the entire cathedral is made of wood.
高三3月联考英语试卷) ______ 6 world powers have accepted ______ Iranian offer for talks on its disputed nuclear program.
As environment protection is becoming _______ public concern, _______ government is determined to pay more attention to the issue.