例句： He traded in his car for a new model.

例句： The tractor took up the slack and pulled the trailer out of the mud.

例句： It's an ancient tale which appears in various guises in several languages.

例句： It is worthwhile to note that both suffered persecution.

例句： This part of the country is still backward.

例句： Do you agree with me about the need for more schools?

例句： I've been thinking I'd better have asked for a lantern.

例句： All her curls have been shorn off.

例句： She rose above her difficulties and became a tremendous success.

例句： The necessary outcome of a war is a fall in production.