问题

What the forest of the USA in the last 350 years
A:has happened to
B:is happened to
C:has happened at
D:is happening;
B:is happened to
C:has happened at
D:is happening;
正确答案是:
同类题型
“Autumn” also means _______in America.
My brother enjoys having cold drinks, so he always puts his Coke in the_________ before drinking it.
They sat face to face, _____ about the things they were interested in for a long time. [ ]
For many years, people __ electric earsHowever, making them has been more difficult than predicted