1、------is a fact that English is being accepted as an inter

1.首先,很重要的一点,你必须明白：不是一看到fact that就断定是同位语从句.
好了,这点明白了的话,我可以告诉你:it在句It is a fact that English is being accepted as an international language. 中充当形式主语,就是that English is being accepted as an international languag太长了,做主语放前面不免头重脚轻,故用形式主语it把它甩后面去.可以还原为：That English is being accepted as an international language is a fact.如果题中原句是同位语的话还少了成分!同位语应该这样说：The fact that English is being accepted as an international language is true.（is true就是原句少了的成分.）
2.what little是固定用法.表示仅有的一丁点儿……
It is said that the worst drought in the century is drawing what little drinkable water is left.
据说本世纪最严重的一场干旱把仅剩的（由left译出 )一丁点儿（由what little译出）可以饮用的水都带走了.
3.对.stay/turn/go/get/becom/keep等是联系动词,后接形容词,一般用现在时（加s)或过去时（加ed）,不用进行式.因为肉保持新鲜是一直持续的一种状态,不是去刻意强调具体的正在进行的动作（不可能正在保持新鲜,意思不通.）.
4.Must I \ May I \ Could I 提问,分别应该用：Yes,you must.或No,you needn't.(注意不是mustn't!)；Yes,you can.或No, you can't.（注意回答不是用may,may I只是提问者故意使用委婉的语气征求别人意见,而回答不需要再用may,因为这时回答不需要征求对方意见了.提问需要!）；could也表示委婉,回答同may I.
5.by后面是否加定冠词the,是这样分的：
（1).by后面名词是笼统的概念,比如
The workers are paid by hour/day/week/month/year等,不加the.
（2)by后面名词是具体的单位或具体数字加单位,比如
The vegetable is sold by the jin.蔬菜按斤出售.这时要加the.
同理,sell by weight中weight是笼统的概念,因为weight包含jin,表示出售的方式（按重量销售.）所以不加； 而sell by the dozen中dozen是具体的数量,12个,要加the.
6.A选项a great success 中,success是名词,英语中有这样一条：当success表示具体的成功（作名词）时,是可数的.可以说a success!不过,两者都可以.
7.都可以.