下列每组单词中有一个是不同类，选出这个词（共10小题；每小题1分，满分10分）
.—Can you guess ______ . —Derrick Rose , I think.
—Do you mind if I put my baggage here for a while?
—What do you mean? —I'm saying that we need to be careful about ______
Jack is someone ______ you will miss a lot after you leave school.
—Do you remember ______ he came? —Yes, I do. He came by car.
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