问题
选择题
Experts suggest that teenagers spend at least 30 minutes exercising, five times a week. Walking and riding your bike _____ , and ______.
A．counts; so are school sports
B．count; school sports count, either
C．count; so do school sports
D．counts; so school sports do
答案
答案：C
“专家建议青少年每周锻炼5次每次至少30分钟。散步和骑自行车很重要学校运动一样重要。”第一空考察主谓一致第二空考察倒装，答案C。