---That must be a mistake. ---No, it ___ a mistake.
The longexpected match was ________ at halftime because of the poor weather conditions.
.—That must have been a long trip.—Yeah, it________us a whole week to get there.
Tsinghua University, ________in 1911, is home to a great number of outstanding figures.
Attention! Before the plane________,passengers will have thirty minutes to board.
In________,people in that village were very poor.