Many people agree that ___ knowledge of English is a must in ____ international trade today.
—Mum, can I watch the TV program for another twenty minutes? —Sorry, dear, it's time you ________ to bed.
________ him not to do so, he wouldn't have made such a serious mistake.
—Look at the full moon. How beautiful it is! —How I wish I ________ on it some day!
The school recommends parents ________ their children to swim in rivers or lakes during summer holidays.
Martin hasn't been in touch with me for ages. He ________ my new cellphone number.