319. She felt _____ of having asked such a silly question when the audience couldn't help laughing.

A. guilty B. crazy C. miserable D. ashamed

320. The driver can adjust the heating in winter and the air conditioning in summer to suit his own _____.

A. leisure B. preference C. convenience D. selection

321. There is not much time left; So I'll tell you about it _____.

A. in detail B. in brief C. in short D. in all

322. She got married although her parents had not given her their _____.

A. allowance B. consent C. permit D. appreciation

319 、 [ 答案 ]D. ashamed.

[ 注釋 ] be ashamed of 因 ...... 感到羞恥，慚愧： 1)He is ashamed of what he was done.2)She felt ashamed of having done so little.(=She felt ashamed that she had done so little.) 3)John was ashamed to ask for help.( 他不好意思向人求助。 ) 4)Jim was ashamed to have troubled me with so many questions.

Be guilty of 犯有 ...... 罪，過失： 1)He was found guilty. 2)I am not guilty of this crime.

320 、 [ 答案 ]B. preference.

[ 注釋 ]preference 偏愛，更加喜歡： My preference is for beef rather than for lamb.( 我更喜歡牛肉面不是羊肉。 )

321 、 [ 答案 ]B. in brief.

[ 注釋 ]in brief(=in a few words) 簡短地（作狀語） , 例如： He told me in brief what had happened. （他簡短地向我講了已發(fā)生地事情。）此處 in brief 等于 briefly 。此處， in brief(=in a word, in short) 簡言之（作插入語） 1)It is a long letter, but in brief, he says "No".( 這是一封長信，但簡言之，他說“不”。 ) 2)John is smart, polite, and well-behaved. In brief, he is admirable. 此句中 in brief 意為 in a word 或 in short. in short 作插入語，其意思是 in a word( 總之 ) 。 In detail 詳細地。 In all 總計，總共： There are 20 in all.

322 、 [ 答案 ]B. consent.

[ 注釋 ]consent n. 同意，贊成； consent (to) vi. 同意，如： consent to a plan( 同意一項計劃 ) 。 allowance 津貼。 permit 執(zhí)照，許可證。