We are going to Yunnan for vacation. We’re staying there _____ half a month.[ ]

The Great Wall is __________ tourist attraction that millions of people pour in every year.

Bob is good at all the subjects at school,science.

Could you tell me _______ it take to go from here to Harbin by car?—About fifty minutes.

Look! That man looks like Mr Green.—It can’t be him. He _________ to America.