16.Tony,if you do that again,I'll tell the teacher.I'm______,you know.( )
A. | strict | B. | enthusiastic | C. | serious | D. | embarrassed |
15.People appreciate ______with him because he is knowledgeable and humorous.( )
A. | to talk | B. | shouting | C. | to shout | D. | talking |
14.My brother ______ is twenty years old is a college student.( )
A. | who | B. | / | C. | whom | D. | which |
11.-1have been knocking at the door,but no one answers.
-Why not______ at the back door?( )
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-Why not______ at the back door?( )
A. | .try knocking | B. | try to knock | ||
C. | .to try knocking | D. | to try to knock. |