―Who is ringing the doorbell. ―Maybe _ is your aunt.

Could you tell me –Sorry, I don’t know .I was not at the meeting.

It was April 29, 2001________Prince William and Kate Middleton walked into the palace hall of the wedding ceremony.

We are deeply impressed by the goal from the conferencethe average income will double by the year 2020.

Thousands of foreigners were ________ to the Shanghai World Expo the day it opened.[ ]