新概念英语求答案
Theyarewalkingoverthebridge.(改为否定句)
Shllyislookingatabigship.(改为否定句)
Theareoplaneisflyingovertheriver.(改为一般疑问句,并作出肯定回答)
themanandthewomanarewaitingforabus.(改为一般疑问句,并作出否定回答)
Thechildrenare(doingtheirhomework.)(对打括号句子提问)