精选优质文档-倾情为你奉上比较难的定语从句练习1. Next weekend Martin will visit the university _ he worked 30 years ago. A. whenB. whichC. whereD. after2. Another unmanned spacecraft “Shenzhou II” , _ China greets the 21st century, marks new progress in the countrys space program. A. for whichB. from whichC. in whichD. with which3. Youll have to wait one more week, _ the manager will be back from his trip. A. whileB. untilC. whenD. before4. David gets up