题目内容

Boarding usually happens _____ minutes before scheduled departure.

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_______ always boards the plane first

Your larger carry-on luggage should be put __________

Match each word with the correct definition.

学习反手切削球技术时,在击球动作过程中,身体打开的幅度越大代表击球的力量越大

A. 对
B. 错

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