We’ll not attend his party _____ we are invited. [ ]A. on condition B.

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We’ll not attend his party _____ we are invited. [     ]
A. on condition
B. unless
C. whenever
D. as though

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举一反三

Although he is considered a great writer, __________. [     ]
A. his works are not widely read
B. but his woks are not widely read
C. however, his works are not widely read
D. still his works are widely read

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__________ you"ve got a chance, you might as well make full use of it. [     ]
A. Now that
B. After
C. Although
D. As soon as

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It worried her a bit        her hair was turning grey.[     ]
A. while
B. that
C. if
D. for

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    _ the Smiths will come or not is        she is worrying about.[     ]
A. What; that
B. Whether; what
C. If; that
D. How; which

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__________ I can see, there is one possible way to keep away from the danger.[     ]
A. As long as
B. Just as
C. As far as
D. Even if

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