Do you know_________they are getting on well with the project?A.whether B.whatC.how D.when为什么选的是A
问题描述：
Do you know_________they are getting on well with the project?
A.whether B.what
C.how D.when
为什么选的是A
答
whether 是否 你知道他们在这个项目上是否进展顺利吗?