A team of explorers ___________ the ocean floor.

A.were studying
B.are studying
C.have been studying
D.has been studying
I think it is D...?

3 answers

You are right. Team is the subject and needs as singular verb.
Great....yeah!
d
b
b
a
d
c
a
c
a
d
b
b
c
a
f
e
d
b
b
b
c