where is Jack?He ( )in the office.He usually doesn't go home until nice.

分类: 作业答案 • 2022-01-09 18:03:03

问题描述：

where is Jack?He ( )in the office.He usually doesn't go home until nice.
A.must be working B.should work C.may be work D.will work

答

选A.must be working