Much new and high technology has been introduced from America, thus ____ great increase in production of the company.

Why do Chinese people use red paper to make Spring Festival couplets(春联)–Because they think red can ______ people good luck.

Please write me and tell me your new job.

do anything last week—I _________ to go skiing or do some shopping, but ______ studying

idn’t you buy the gold ring —- I ______,but I didn’t have the money.