Theengineer______myfatherworksisabout50yearsold.
A、towhomD
with whom 引导定语从句 .with whom 放在从句中即为 :my father works with the engineer
It is not decided ________ the conference will be held.
Iaskedhimto________meafewminutessothatwecouldgooveralltheproblems.
Fromthesociolinguisticperspective,aspeechvarietyisnomorethanadialectalvarietyofalanguage.
A linguistic theory is constructed about what ______ is and how it works.
This is an important problem _______ too few social scientists have researched.
