Tens years ago there full of fish in the lake .Now there are fish .A. used to live; lit

问题补充：

Tens years ago, there full of fish in the lake .Now there are fish .

A. used to live; little

B. had; a few

C. were; many

D. used to be; few

答案：

A. used to live; little

B. had; a few

C. were; many

(答案→)D. used to be; few

解析：there be 的过去时，即there used to be，表示过去常常有，而根据上文的内容，过去有，现在没有，又根据后一空前的be动词为are，后面的fish为复数形式，故选答案为D，用few来修饰。