4.My father ____his little store rapidly into a big department store in the past ten years.

A. has developed B. developed

C. is developing D. develops

【答案】A

【解析】

【详解】考查时态。句意：在过去10年里，我的父亲把他的小店发展成了一个大型的购物商店。本句时间状语in the past ten yeas通常要和现在完成时连用，故A项正确。

5.Computer-buyers are very happy because the price of computers has ___a lot since last month.

A. gone down B. brought up

C. gone up D. brought down

【答案】A

【解析】

【详解】考查动词短语辨析。A. gone down下降；B. brought up抚养，抚育；C. gone up上升；D. brought down使......减少；句意：购买电脑的人很高兴，因为从上个月以来电脑的价格下降了很多。根据句意可知A项正确。

6.--- What a beautiful picture!

---It's years ___I painted a picture as beautiful as thisone.

A. that B. since

C. before D. when

【答案】B

【解析】

【详解】考查状语从句。句意：-这幅画真美啊！-我已经很多年没有画出和这幅一样美的画了。固定句式：It is/has been+一段时间+since从句（过去时），该句式表示自从过去某个时间以来已经很长时间了。A项是强调句型，CD项与句意不符。故B项正确。

7.You must get a good night sleep first, ____much work you have to do.

A. although B. no matter

C. however D. whatever

【答案】C