We are taught that a business letter should be written in a formal style in a personal one.
It ________ have been her to leave her child alone and do whatever she wanted. She isn't such a person.
Microblog is a platform ________ people can express their thoughts, show their daily life and communicate with each other by sending post.
Thanks to ________ invention of the Internet, people can stay at home chatting with ________ friends online.
—The skirt is too expensive; its color is too dark, and...—________. Is there anyone so particular like you?
—Mum, I've finished my work.—Good, and ________ you choose to play on your PSP or listen to music on your iPod, you mustn't disturb me.