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题目内容
（河北农业大学大学英语Ⅳ）
单选题】John arrived late for the baseball game because he had to________ for his mom in the morning to the grocery store and the post office.
A、
walk errand
B、
run errand
C、
walk errands
D、
run errands
A、
walk errand
B、
run errand
C、
walk errands
D、
run errands
参考答案