17．Nobody can learn English well yon work hard on it． A．if B． unless C．when D．but——青夏教育精英家教网——

摘要：17．Nobody can learn English well yon work hard on it． A．if B． unless C．when D．but

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Surfing is too hard ____ me. I’m afraid nobody can learn it

easily.

A．on

B．with

C．for

D．at

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Surfing is too hard ____ me. I’m afraid nobody can learn it
easily.

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Nobody can learn English well _____ you work hard on it.

A. if
B. unless
C. when
D. but

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Nobody can learn English well _____ he works hard on it.

A. if
B. when
C. but
D. unless

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Nobody can learn English well ________ he works hard on it.

[ ]

A. if
B. when
C. unless

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