问题
Look at the sky! What is it?—Oh! _______UFO is landing on the ground.
A:A
B:An
C:/
D:The
B:An
C:/
D:The
正确答案是：
同类题型
He may have seen the film when it was shown last week, _____ he?
Did you see Mary and her sister this morning?– Yes, I saw _________ girls playing in the playground.
The policeman helped the old woman walk _________ the road. [ ]
I can’t stop smoking, doctor. –For your health, I’m afraid you________.