17、_________，it's very tidy.
    A. As her room is small B. Small as her room is
    C. As small her room is D. Small as her room
    as引導讓步狀語從句，句子需要倒狀。Young as he is，Jack is already familiar with most of the books。答案 B
    18、As _______ as possible he opened the door and went out into the cold December night.
    A. quiet B. quietly C. quite D. quietly
    quiet adj.安靜的 答案 B
    quite adv.十分，很；quite big
    19、I felt thoroughly ________ in the crowded Manhattan.
    A. wondered B. lost C. missed D. separated
    wondered 懷疑 lost 迷路 missed 丟失 separated 分開 答案 B
    20、The city has decided to _______ all the old buildings.
    A. break away from B. get rid of C. come up with D. knock down
    break away from 1、掙脫 The prisoner broke away from his guards. 2、脫離某政黨、政府等 A province has broken away to form a new state.
    get rid of：擺脫 The shop ordered 20 copies of the book and now it can't get rid of them.
    come up with sth.：找到或提出（答案、辦法等）She came up with a new idea for increasing sales.
    knock down：拆除 These old houses are going to be knocked down. 答案 D