You will see groups of teenagers( )(wear)blue jeans ,colour T-shirts and baseball caps.
问题描述：
You will see groups of teenagers( )(wear)blue jeans ,colour T-shirts and baseball caps.
答
wearing
see ab doing sth 看见某人做某事
你将会看到成群的年轻人穿着蓝仔裤,T恤和篮球帽