—________
—Yes,I have.It was written by a celebrated writer,Yan Geling.
生物兴趣小组的同学周末要去捕捉水螅以备实验课上使用,请问他们应该在什么环境中寻找( )
There’re so many kinds of tape-recorders on sale that I can’t make up my mind _______ to buy.