—Hi, Tom. Any idea where Jane is?
—She _____in the classroom. I saw her there just now.
| A．shall be | B．should have been |
| C．must be | D．might have been |
His actions could lead to him ______ his job.
| A．lose | B．losing | C．to lose | D．being lost |
She devoted herself ______ to her research and it earned her a good reputation in her field.
| A．strongly | B．extremely | C．entirely | D．freely |
Don’t leave the water ______ while you brush your teeth.
| A．run | B．running | C．being run | D．to run |
Listening to loud music at rock concerts ______caused hearing loss in some teenagers.
| A．is | B．are | C．has | D．have |
People from the West like to use such expressions as “please” and “thank you” in cases ______ some people in Asia may not think it necessary.
| A．what | B．which | C．that | D．where |