You should be working instead of there in bed.A. lyingB. lieC. liesD. to lie

问题补充：

You should be working instead of there in bed.

A. lying

B. lie

C. lies

D. to lie

答案：

(答案→)A. lying

B. lie

C. lies

D. to lie

解析：句意：你应该正在工作而不是躺在床上。Instead of sth / doing sth,代替或而不是某事/ 做某事。前后保持一致。根据固定短语和句意。故选C。