______I went to the USA, I visited many cities.[ ]A. First time B. Fo

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______I went to the USA, I visited many cities.[     ]
A. First time
B. For the first time
C. The first time
D. By the first time

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举一反三

We won"t give up _______ we should fail times.[     ]
A. even if
B. since
C. whether
D. until

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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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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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