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

She has visited Hong Kong_______, but she wants to be there a_____ time.

What are you doing now?– I’m talking to Mary online. She ___ from Canada a few days ago.

In my opinion, Jack, though relatively stubborn, was not too difficult ___.

You can use MSN to talk with your friend on the Internet. -I know. But can you tell me_______?