题目内容

已知字符串str= 'skdaskerkjsalkj'，请统计该字符串中各字母出现的次数。

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已知列表li_one = [1,2,1,2,3,5,4,3,5,7,4,7,8]，编写程序实现删除列表li_one中重复数据的功能。

It is a joy to hear ________ apologies that are from the bottom of one's heart.

A. real
B. true
C. sincere
D. realistic

He badly _____________ his back digging in the public garden on Children's Day.

A. stretched
B. exerted
C. pulled
D. strained

I don't have much free time as my work _______ all my time.

A. takes away
B. takes over
C. takes up
D. takes in