A. behind time
Đáp án C
in time: đúng giờ
Dịch: Tại sao nhiều thanh thiếu niên lại có năng lượng để chơi trò chơi điện tử cho đến khuya nhưng không thể tìm ra năng lượng để ra khỏi giường, đến trường đúng giờ.
Chess, often (1 )______ to as a Royal Game, is the oldest of all board games which do not contain an element of chance.
Or do they copy one another, perhaps (9) ________ envy or perhaps because they have shared information about the products?
Each bird will carry these in a miniature backpack, (15) ________, that is, from the camera, which will hang around its neck.
but I can (20) _____ up television easily enough. You can’t watch television at bus stops!
The readings made by the sensors will be automatically converted into text messages and beamed to the Internet – (14) ________ they will appear on a dedicated ‘pigeon blog’.