3.（单选题）I had no idea ______ he became rich from a coal business.

1.（填空题）我已做了充分准备去参加那个英语口语比赛。I’m __________ that English speaking contest.

48.（单选题）If you are truly ambitious, you should be moving up every 2-3 years, either in the form of a promotion or a change of company.

47.（单选题）If you are not fully satisfied with the purchase you have made, we can help you with a replacement, return or repair.

46.（单选题）We have established an online communication system with dealers in order to serve our customers in the best way we can.

45.（单选题）Police can use big data to determine where they are expected to be most needed and where crimes are most likely to occur.

44.（单选题）Thousands of reports and maps have been scanned in and used to make our GPS devices as accurate as possible.

43.（单选题）I am sorry I won＇t be able to attend the business meeting scheduled for next Friday.

42.（单选题）All guests are required to carry their original passport and room card when they leave the ship.

41.（单选题）According to this contract, if your job doesn＇t meet your expectation, you have the right to end your contract with no notice.

40.（单选题）If you need any help in starting a business, our team will be right here for you.