帮我解释一下,这些英语题括号里为什么要添这个?

题目

帮我解释一下,这些英语题括号里为什么要添这个?
1.Blieve yourself.You‘re better than（anyone else）.you are the best.wish you success!
2.-Will you get there by(/)train?
-No,I‘ll take (a)taxi
3.Of the two pencils,theboy bought(the less expensive)one
4.Jim is always ready to help others.He‘s really (a)living Sam
5.I think you have dropped (an) "r" in writing"merry".
6.The Greens go to England once (\)year
7.-Where‘s (a) key to my bike?
-It‘s in your bag
8.Yao Ming,(an)NBAstar,will continue(the)matches this season.
9.Tom does not like the film(itself),but his parents like it
10.If this dictionary is not yours,(who else‘s)can it be?
11.I sometimes have nosense of(direction)when I arrive at the crossroad.

答案

1.你比其他任何人都强anyone else
2.乘火车、飞机、汽车用by train/plane/car take a train/plame/car
3.前面限定范围只有两个,形容词的比较级前加 the,of the two girls,she is the clever one.
4.他是一个活.,a living ...
5.丢了一个 r,"r" 是一元音音标开头的字母,前面的冠词用
6.一年一次,应该是 once a year
7.我的自行车钥匙在哪 应该是特指用 the ,这道题一般考 a/the key to my bike 中的 to ,因为比较特殊,容易和 of 弄混淆
8.和第五题一类,NBA 是以元音音标开头的
9.他 自己不喜欢 ,应该用 '他自己“himself
10.它能是别的什么人的呢 别的什么人 who else,加名词所有格who else's
11.对方位感到迷惑,方向,方位的名词direction