someon

C listen表示听的意思，引起人的注意，后面的句子通常用进行时态，结构为be+doing，trek的现在分词是trekking，故本题选C。

这是there be句型，中间加了一个情态动词must，则be就用其原形be，比如我们是it is cold，很冷，如果你加了must，就变成it must be cold，一定很冷。

某人说 时间就是金钱！

Someone says,“Time is money.” But I think time is 1 important than money.Why?Because when money is spent,we can get it back.However,when time is 2 it"ll never 3 .That"s 4 we mustn"t waste（浪费） time. It goes without saying that the 5 is usually limited（有限的）.Even a second is very important.We should make full use of our time to do 6 useful. But it is a pity that there are a lot of people who 7 know the importance of time.They spent their limited time smoking,drinking and playing. They do not know that wasting time means wasting part of their own 8 . In a word,we should save time.We shouldn"t 9 today"s work for tomorrow. Remember we have no time to 10 . 1.A.much B.less C.much less D.even more 2.A.cost B.bought C.gone D.finished 3.A.return B.carry C.take D.bring 4.A.what B.that C.because D.why 5.A.money B.time C.day D.food 6.A.nothing B.something C.anything D.everything 7.A.do not B.does not C.did not D.do 8.A.time B.food C.money D.life 9.A.stop B.leave C.let D.give 10.A.lose B.save C.spend D.take 答案：DCADB BADBA

握手似乎成为了一种全世界通用的打招呼方式