帮忙翻译成中文和解释为何选这个答案?

Question

31. How much did you spend ______ the computer ?
A. on B. in C. on buying D . to buy
答案: A 翻译: 解释:
32. Tigers hunt for food ______ most of the time while lions like to hurt in groups .
A. lonely B. alone C. one D . together
答案: B 翻译: 解释:
33. Either the children or their father _____ gone swimming . I'm not sure .
A. have B. has C. are D . is
答案: B 翻译: 解释:
34. The news _____ for my brother .
A. are B. is C. were D . be
答案: B 翻译: 解释:
35. Larry is so selfish that he never helps others , ____________ he ?
A. is B. isn't C. does D . doesn't
答案: B 翻译: 解释:

Answer 1

31.How much did you spend __on____ the computer
你在电脑上花了多少时间？
spend on sth
spend in doing sth固定搭配。

32Tigers hunt for food _alone_____ most of the time while lions like to hurt in groups .
老虎大多时候喜欢独自找寻食物，但是狮子喜欢群体找寻。
alone表示独自，强调数量上一个人，lonely孤独，表示心里的感受。

33Either the children or their father _has____ gone swimming . I'm not sure .
要么是孩子们，要么是孩子的爸爸去游泳了，我不是很确定。
either……or就近原则，father是单数。

34. The news __is___ for my brother .
A. are B. is C. were D . be
这个新闻是我哥哥的。
news是貌似是复数，其实是不可数名词，只能用单数的谓语动词修饰。

35. Larry is so selfish that he never helps others , ____isn't________ he ?
A. is B. isn't C. does D . doesn't
larry很自私，从不帮助别人，是么？
反义疑问句，主句的谓语动词时is,反问就是否定疑问即可。

Answer 2

31. How much did you spend ______ the computer ?
A. on B. in C. on buying D . to buy
答案: A 翻译: 你电脑多少钱买的?解释: 人+spend +钱+on sth 在sth花钱
32. Tigers hunt for food ______ most of the time while lions like to hurt in groups .
A. lonely B. alone C. one D . together
答案: B 翻译:老虎大部分时间独自打猎,而狮子集体打猎 解释: alone独自,一个人地,lonely孤独的
33. Either the children or their father _____ gone swimming . I'm not sure .
A. have B. has C. are D . is
答案: B 翻译: 要么是孩子要么是父亲去游泳了， 但我不敢肯定 解释: either ...or是就近原则
34. The news _____ for my brother .
A. are B. is C. were D . be
答案: B 翻译: 这消息是给我兄弟的， (这消息与我兄弟有关)解释: news是单数
35. Larry is so selfish that he never helps others , ____________ he ?
A. is B. isn't C. does D . doesn't
答案: B 翻译: 劳拉很自私,她从不帮人,对吧?解释:这是反意疑问句,前面是肯定句, 则后面用否定句