Science and technology have __________ in important ways to the improvement of agricutural production.
His mother had talked to him for many minutes while he was watching TV,but ____.
—— We have to stop talking here outside.Listen,_____! —— Hurry up, or we’ll be late.
It there anyone in your class ______family is in the country?
Can you lend me the book ______the other day?
That is the day ______I'll never forget.