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It is nearly half a century________ the first computer was invented.

A. since  B. when  C. that   D. until

 

A

It is …since 句型意思是“自从…已经多久了”。

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________ in good climate.

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Tree rings grow far from each other

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I’m glad to write to you. It is near a month since you had left our hospital. I’m still worried

about you. How are you get along these days? I think you may be much better now, but I’d better

have a good rest and take good care of yourselves since you are sixty-year-old man. I still

remember those days which you helped me to my English. With your help, I make good progress.

But to my regret, my English remains very poor through I have made good use of my time. Can

you give me some advice on it?

 

查看答案和解析>>

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