从a、b、c和d 四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该选项标号涂黑。 1. ----- sorry, i can’t return your book today because i am only half way through it. ------ _________. i have plenty of other books to read. a. take it easy b. no wonder c. take your time d. no doubt 2. chinese vice-premier called on thursday for _______ all-out effort to ensure ______food and drug safety. a.an; a b.an; / c.the; the d./; the