请求帮助,不是说let后不加s的,为啥新概念第二册59课里:Then he sits and barks until someone lets him out. 第273 还有这样的提问:Does he let himself in after this or not? 有人能帮帮我吗?谢谢!
请求帮助,不是说let后不加s的,为啥新概念第二册59课里:Then he sits and barks until someone lets him out. 第273 还有这样的提问:Does he let himself in after this or not? 有人能帮帮我吗?谢谢!