题目内容
I will mark ______ everything you say.It is helpful to the English learners.
| A.up | B.down | C.out | D.off |
B
mark up“提高;标记”; mark down“记下”; mark out “划出(界线、范围)”;mark off“划出,划开;区分”。由句意可知,B项符合题意。
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| A.up | B.down | C.out | D.off |