–Lots of trees and flowers on both sides of the road last year.Oh beautiful they ar

问题补充：

–Lots of trees and flowers on both sides of the road last year.

--Oh, beautiful they are!

A. have been planted; how

B. were planted; what

C. were planted; how

D. have been planted; what

答案：

(答案→)A. have been planted; how

B. were planted; what

C. were planted; how

D. have been planted; what

解析：句意：去年道的两边种了很多花和树。是啊，多漂亮啊！主语花和树是动作的承受者，故用被动语态，又因last year可知用一般过去时。第二个空为感叹句，how+形容词/副词+主语+其它。故选B。