问题补充:
.—What the twins on weekends?
—She usually goes skateboarding.
A. do, do
B. does, do
C. does, does
D. do, does
答案:
A. do, do
B. does, do
(答案→)C. does, does
D. do, does
解析:句意:——那对双保胎在周末干什么?——她经常去滑板。主语是the twins,故用助动词do来表示。疑问句的结构:疑问词+助动词+主语+动词原形,故选C。