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
答
B
过去正在发生的
过去进行时
答
b
答
B