The elderly couple have three sons, butof them live nearby.
A. either
B. none
C. both
D. neither
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Someone knocked at the door while I a model plane.
A. made
B. was making
C. am making
D. make
She was one of tennis players of her generation.
A. good
B. better
C. a best
D. the best
Since we havetime left, we must solve this problem immediatly.
A. a little
B. a few
C. little
D. few
It is necessary to reward children appropriately, this helps strenghen their confidence.
A. because
B. till
C. in case
D. unless
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