He spends little time on English, but , he has passed the important examination.
| A．somehow | B．as a result |
| C．so | D．however |
______ to reach them on the phone, we sent an email instead.
| A．Fail | B．Failed | C．To fail | D．Having failed |
Our bodies are strengthened by taking exercise. ______, our minds are developed by learning.
| A．Probably | B．Likely | C．Similarly | D．Generally |
American Indians ______ about five percent of the U.S. population.
| A．fill up | B．bring up | C．set up | D．make up |
The problem of global warming is serious. ______, the sea levels have risen a little.
| A．As a result | B．On the contrary | C．In particular | D．In other words |
At the beginning of class, the noise of desks ______ could be heard outside the classroom.
| A．opened and closed | B．to be opened and closed |
| C．being opened and closed | D．to open and close |