The traffic on the main streets has a longer green signal than________on the small ones.
| A．one | B．this |
| C．that | D．it |
I’ll go to fight in the battle __________ you go or not .
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There are countless ________ leaves as if they were a red blanket_______ the ground.
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he has been working so hard . __________ he could answer such a difficult question.
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Holmes walked swiftly into the garden , ______________ by Doctor Watson.
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The _________ on his face was kind of strange, when I told him the news.
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