_______ the sun rising slowly in the east, the scene is a perfect dream.
| A．Seeing | B．To be seeing |
| C．When you see | D．Having seen |
The thief used a ladder that had been ______ by some workmen, and climbed over the wall.
| A．left aside | B．left behind | C．left off | D．left alone |
—Hi, what did our monitor say just now?
—Every boy and every girl as well as teachers who are to visit Water Cubeasked to be at the school gate before 6∶30 in the morning.
| A．is | B．were | C．are | D．was |
When I entered the room, I found Mary ______ at the desk ______ her homework.
| A．sat; doing | B．sitting; to do |
| C．seating; to do | D．seated; doing |
Yesterday we visited a modern hospital, around _________ some fruit shops.
| A．which is | B．that is | C．which are | D．it are |
— You’re at ______ liberty to say whatever you like.
— I think you’re taking ______ risk by investing everything in one company.
| A．the; / | B．the; a | C．/; / | D．/; a |