_____ for making so many mistakes in the exam, she was in low spirits.
| A．Having blamed | B．To blame | C．Blamed | D．To be blamed |
I found her ______ in thought.
| A．losing | B．lost | C．lose | D．being lost |
The chairman thought _____ necessary to invite Professor Smith to speak at the meeting.
| A．that | B．it | C．this | D．him |
Eating too much fat can______ heart disease and cause high blood pressure.
| A．result from | B．contribute to | C．attend to | D．lead in |
Her __________ feeling about him made him ____________.
| A．confused ; confusing | B．confusing ; confused |
| C．confused; confused | D．confusing; confusing |
Some people get in touch with each other by mobile phones__________ others keep contact with each other by e-mail.
A. while B. before C .when C. since