"The days are getting longer." "Spring______." (2 分)A.must comeB.must be comeC.is having to comeD.must be coming

问题描述:

"The days are getting longer." "Spring______." (2 分)
A.must come
B.must be come
C.is having to come
D.must be coming

c.
因为这是一个be going to do的句型。

d

must be coming