查人人中国名人网我的世界pe原版皮肤:呵呵，麻烦各位了
来源：百度文库 编辑：查人人中国名人网 时间：2024/05/12 12:33:37
The tudents in my English class made lots of mistakes today.They _____trouble with the lessons.
A.must have B.must have had C.can have D.must be having
请问为什么选A啊，B，D分别错在哪呢？
A.must have B.must have had C.can have D.must be having
请问为什么选A啊，B，D分别错在哪呢？