【正文】
參考答案: 一、 1. program 2. manage 3. training 4. secretary 5. engineer 二、 1. D 主句用現(xiàn)在完成時,故排除 A、 C,而 start是終止性動詞,不能與時間段連用,故排除 B。 2. A 主句用現(xiàn)在完成時, join是終止性動詞,不能與一段時間連用,故選 A。 3. D 4. C 5. A in need of sth. 三、 1. has been dead。 since 2. have had。 for 3. has kept。 for 4. has been away from。 since 5. have been in。 for