Don’t leave her _____ outside in the rain; she will catch a cold.
— Why weren't you at school yesterday morning, Li Lei? — ________, sir.
.If the launch in 2005 is successful, China will be the third country ________its astronauts into space.
In this university a medal with ten thousand dollars ________gains success in science and technology every two years .
— Thank you for your CD - ROM. I'll return it as soon as I can. — ________. I've got another one to spare.
Apples are usually sold by ________ weight and eggs are sometimes sold by ________ dozen.