6. ______ matters most in learning English is enough practice.
A. What
B. Why
C. Where
D. Which
7. --It's $500, but that is my last offer.
--OK, it is a ______.
A. cost
B. price
C. reward
D. deal
8. The reason ______ I have to go is ______ my mother is ill in bed.
A. why; why
B. why; because
C. why; that
D. that; because
9. A good storyteller must be able to hold his listeners' curiosity ______ he reaches the end of the story.
A. when
B. unless
C. after
D. until
10. ______ did we go swimming in the Changjiang River.
A. Only
B. Once
C. Seldom
D. When
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