There was a big noise in the garden.The man went out to see ________.A.what is happeningB.what was happening C.what was happened D.what happens

问题描述:

There was a big noise in the garden.The man went out to see ________.
A.what is happening
B.what was happening
C.what was happened
D.what happens

B
过去正在发生的
过去进行时

b

B