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题型：单选题题类：真题难易度：普通

Sit down, Emma. You will only make yourself more tired, on you feet.

A、to keep B、keeping C、having kept D、to have kept

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I had great difficulty the suitable food on the menu in that restaurant.

that the country leaders can lead them out of the financial problems, people are becoming more optimistic about the future of the country.

Every year, a great many visitors come to visit the temple ______ the 12th century, ______ has brought a large income.

While shopping women sometimes can't help ________ into buying more clothes than necessary.

Synthetic biology, to design and construct new biological parts, devices and systems, is changing many aspects of our life.

After collecting enough money, they had the lab better {#blank#}1{#/blank#}(装备).

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