37、(单选、2.5分) The room__________as a laboratory for nearly two years till now. A、is used B、was used C、has been used D、had been used

37、(单选、2.5分)
The room__________as a laboratory for nearly two years till now.
A、is used
B、was used
C、has been used
D、had been used

出自：河北工程技术学院大学英语1

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