精选优质文档-倾情为你奉上班级：_ 姓名：_ 学号：_8AU6 Extended Exercises (3)Part 1 Grammar and VocabularyI .Choose the best answer: ( ) 1.Which spacecraft landed _the planet Mars?A. on B. in C. seem D. into( ) 2._is exciting for the children to picnic on top of the hill.A. This B. That C. It D. There( ) 3.Why is ther
