Sit down, Emma. You will only make yourself more tired, ________ on your feet.[ ]A. to keepB. keepin

题目简介

Sit down, Emma. You will only make yourself more tired, ________ on your feet.[ ]A. to keepB. keepin

题目详情

Sit down, Emma. You will only make yourself more tired, ________ on your feet.
[     ]
A. to keep  
B. keeping
C. having kept  
D. to have kept
题型:单选题难度:中档来源:同步题

答案

B

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