Before you put new oil in the system,it is mandatory to replace the filter.

单选题

Before you put new oil in the system,it is mandatory to replace the filter.

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多选题

听力原文：Did you test-drive the new car before you bought it？（A) You bet I did.（B) I passe

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When you do something new exciting，you have________.

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单选题

Can you put me on( )flight to Harbin?

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材料题

ou put in.If you put your money in a savings account,one year later,youll have more money than you put in.Why?When you keep your money in a bank,your money earns interest.Interest is the amount of money a bank pays you to use your money.The bank uses your money(and the money of other people,too)to loan money to people and businesses.The bank will send you a statement several times a year.A bank statement tells you how much money there is in your account.It also tells you how much interest you ha

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