一、单项填空
1. (2015年高考英语原创预测卷 02浙江卷)Empty talk is harmful to the nation, while practical work can help _______ thrive.
A. that B. this C. it D. which
2.(江苏省某四星高中2016届高考英语词汇复习专题练)Change can be scary, but it’s during transformations that some of the best opportunities present _______.
A. it B. one C. those D. themselves