31．—So you know Della?
—Yes, it was last week__________I surfed the Internet.
| A．that | B．when | C．why | D．Whom |
The 18-storeyed building, when _____, will shut out the sun _____ up the rooms in my house.
| A．completed; lighted |
| B．completing; lighting |
| C．completing; lighted |
| D．completed; lighting |
_____ and out of breath, we reached the top of the mountain and stopped _____ the beautiful scenery.
| A．Tiring; to admire | B．Being tired; admiring |
| C．Tired; to admire | D．Tired; admiring |
The performance of the host, _____ to please the audience and draw their attention, was greeted with a cold silence, however.
| A．had intended | B．intended |
| C．being intended | D．to intend |
Some of the schools in Shanghai have moved one step closer to _____ with the global education community.
| A．being connected | B．connect |
| C．having connected | D．be connected |
The teacher asked more _____ to prevent the students’ eyes from being injured.
| A．to do | B．done | C．to be done | D．being done |