---- What has made him look like lacking sleep?

----- _____ his wife is ill and he has to get up several times a night to attend to her.

A．For

B．Because

C．That

D．What

在新的环境中，只有有效地沟通，协调好关系，才能（）到合作和支持。

A.了解

B.获得

C.谋求

D.从业务上得