[单选题] It’s really nice ____ you to come and see me.

1、[单选题]Living in the central Australian desert has its problems,________ obtaining fresh water is not the least of which.

• A、for which
• B、to which
• C、of which
• D、in which

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2、[单选题]As ________ announced in today’s papers,the Shanghai Export Commodities Fair is also open on Sundays.

• A、being
• B、is
• C、to be
• D、been

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3、[单选题]________ is known to the world,Mark Twain is great American writer.

• A、That
• B、Which
• C、As
• D、It

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4、[单选题]We were struck by the extent ________ which teachers’decisions served the interests of the school rather than those of the students.

• A、to
• B、for
• C、in
• D、with

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5、[单选题]Government cannot operate effectively ________ it is free from such interference.

• A、so long as
• B、so that
• C、unless
• D、because

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