帮忙做一些英语题[1]The reason______he came late for the meeting was

帮忙做一些英语题
[1]The reason______he came late for the meeting was difficult to say
A、because B、as
C、why D、for
[2] _______ we are allowed to go abroad is still a question
A、If B、Whether
C、That D、As
[3]Please dial 120______ traffic accident
A、in case B、in the case of
C、lest D、in case of
[4]It is only _______ walk to go there on foot
A、ten minutes B、ten minutes
C、ten minute's D、ten-minutes's
[5]Would you like tea or coffee?"
"Oh,_____ "
A、each one is good B、each will be fine
C、either dose well D、either will do

[6]They had stored a ______ quantity lf grain in their house
A、large B、much
C、many D、lot
[7]Excuse me, but it is time to have your temperature____
A、taken B、taking
C、to take D、take
[8]Do you think he studies harder than _____ in his class?
A、any other boy B、any boys
C、another D、any other boys
[9]The roof of the house is white, It_______ last night
A、should rain B、must have rained
C、must rain D、should have rained
[10]______,I'd have told you
A、If I would have known tit B、If I have had known it
C、Had I known it D、Should I know it
[11]Are you sure you______ use the new machine?
A、know to B、know the
C、know how D、know how to
[12]We can overcome all the difficulties _____ we are closely united
A、as long as B、as for as
C、as well as D、as good as
[13]Never once _____ for class when he was at college
A、did he late B、was he late
C、he was late D、he did late
[14]The bus was held up on the way to the airport, otherwise I _______the plane
A、must catch B、have caught
C、could have caught D、ought to catch
[15]It ix generally considered unwise to give a child ______ he or she wants
A、whichever B、however
C、wherever D、whatever
答案不统一，我怎么知道哪个正确啊？有接近的也行啊~

1 C.定语从句,why在从句中表原因
2 B 主语从句,从句中不缺少成分,用whether 引导,意为“是否”
3 D in case of 防备,假如,如果发生 .如In case of fire,ring the alarm bell.如遇失火,请按警铃.
4 没有正确答案,A 和 B选 项中应该存在错误.正确答案应该是 ten minutes' walk .少了一个小逗撇.
5 D either表示两个中的一个
6 A a large quantity of 译为“许多,大量”其谓语由短语中的“quantity”形式决定.它是单数,不管修饰的是什么样的词,一律用单数.如果是quantities,则谓语全用复数.只与quantity的形式有关.if 应改成 of ,输入错误
7 A “ have + sth （宾语）+ 过去分词（宾语补足语）”意为“让 / 叫 / 使 / 请别人做某事”.宾语sth 后面用过去分词作宾语补足语,说明sth 与过去分词表示的动作之间是被动关系.例如:We had the machine mended just now.“ have + sb （宾语）+ do sth （宾语补足语）”意为“让 / 叫 / 使某人做某事”.此结构中的 have 是使役动词,sb 作宾语,其后的 do sth 是省去 to 的动词不定式作宾语补足语.例如：The boss often has them work for 14 hours a day.
“ have +sb / sth （宾语）+ 现在分词（宾语补足语）”意为“叫 / 让 / 使某人做某事或让某种情况发生”.宾语 sb/sth 后面用现在分词作宾语补足语,表示宾语与现在分词表示的动作之间为主动关系,且动作正在进行.例如：Don’t have the baby crying!不要让婴儿啼哭!
8 A any other boy,另外任一一个,是一种单数的表达方式,是一种强调; 如果想用boys那么就用other boys(其他的男孩子,表示多人)
9 B must have done表示对过去的猜测,强调的是动作已经完成.
10 C 虚拟语气中的从句可以省略if,此从句中的助动词had,were,should等要移至主语之前.
11 D how to do sth 做know 的宾语.
12 A as long as 只要 ;和...一样长.如：As long as live,I will help you.只要我活着,
13 B 否定词never 放在句首,句子要用半倒装.
14 C could have done 本可以做却没做某事,强调“本来可以”；
15 D whatever做want的宾语,引导一个名词性从句.