After months of voyage, Columbus arrived in ______ later proved to be a new continent.
A、whereC
注意，本句话并非定语从句，而是宾语从句。因为在介词in后面，应该用what引导的宾语从句，what在宾语从句中作主语。
Charles Smith, ______ was my former teacher, retired last year.
Studentsshould_____theirowninterestsaswellasdotheirschoolwork.
Hisintelligencewill________himtogetascholarshiptocollege.
When you're_____ a crisis, it often helps to talk to someone.
I don ’ t need any help at the moment,but I _____your offer.
