Mrs.Smith is both kind ____ gentle to her pupils.
A. and
B. or
C. either
D. neither
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____ I walked for six hours, I was tired out.
After
Before
C. When
D. As
The car is quite old ____ in excellent condition.
A. and
B. but
C. or
D. either
We will make fewer mistakes ____ we are careful enough.
A. as long as
B. so that
C. as far as
D. even if
The box is ____ heavy ____ I can’t lift it.
A. such, that
B. too, to
C. very, that
D. so, that
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