从所给的四个选项中选择最佳答案

______if (如果) I am free tomorrow evening．

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A．I shall help you　　　B．I help you

C．Shall I help you　　　D．Do I help you

Take ________ turning ________ right.　　　

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A．the first/on the　　　   　　  B．first/on

C．one/on the　　　　　　　    D．first/in

The rice ________  　　　　　　growing fine.　　　

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A．am　　　B．is　　　C．are　　　D．be

There are thirteen ______ in the building, and she lives on the twelfth ______.

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　　A. floors ... floor　　 B. floors ... floors

　　C. a floor ... floors　　D. floor ... floors

They live in a place ______ Salt Lake City.

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A. calls   B. calling   C. called   D. to call

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We ______ for Nanjing at five tomorrow.

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　　A. start   B. begin   C. starts   D. begins