He waited until it was dark ____ nobody could see him clearly.
| A．so that | B．in order to | C．although | D．however |
Betty_____ Shanghai in a few days, perhaps next Sunday. Do you know when the earliest plane ____ on Sundays?
| A．leaves; is taking off | B．leaves; takes off |
| C．is leaving; is taking off | D．is leaving; takes off |
I thought Mary was a very shy girl ____ I met her. Actually she was an outgoing girl.
| A．at the first time | B．for the first time |
| C．the first time | D．by the first time |
When __________, the factory will provide new jobs for graduates.
| A．built | B．is built |
| C．has built | D．will be built |
--Is it in the park ______we had a celebration party yesterday ______ you found the wallet?
--You are right, it was found in the park!
| A．which/that | B．that/when |
| C．that/when | D．where/that |
When I entered the classroom, I found all my students_____ in their exercises.
| A．burying | B．to bury | C．buried | D．being buried |