happened to be no one in the building when the fire broke out.
| A．It | B．There | C．This | D．That |
—Do you know the most ancient city in China—Xi’an well?
—No，this is the first time I ________ here.
| A．came | B．have come | C．am coming | D．come |
The number of people invited ______fifty, but a number of them ______absent for different reasons.
A. were; was B. was; was C. was; were D were; were
What ________great fun it is to have a swim on a hot day in summer!
| A．a | B． the | C．an | D．\ |
and happy, Tony stood up and accepted the prize.
| A．surprising | B．Being surprised | C．Surprised | D．To be surprising |
He found them at a table chess.
| A．sat; to play | B．sitting; to play | C．seated; playing | D．seat; playing |