你买的这个钢笔不好用了!The pen you bought didn't _.=There _ _ _ _ the pen you bought
问题描述:
你买的这个钢笔不好用了!The pen you bought didn't _.=There _ _ _ _ the pen you bought
=_ _ _ _ the pen you bought
为某人点/订购(用两种说法)
答
use aren't