搜题
王老师:19139051760(拨打)
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第1题

He stumbled ____________ the staircase and hurt his leg.
·in
·to
·on
·at
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第2题

Attending parties occasionally ca________ up your life.
·add
·color
·spice
·get
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第3题

Ia developed country, people will perhaps be unemployed if the birthrate _____________.
·goes up
·goes down
·re
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第4题

The new editioof this book is _____ expensive thathe old one .
·fewer
·more much
·less
·a little
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