摘要： - Why are you so popular with your students? - As a teacher, I seldom give my students so difficult a problem they cannot work out. A. as B. that C. if D. which
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— Why are you so popular with your students?
— As a teacher, I seldom give my students so difficult a problem ____ they cannot work out
- A.as
- B.that
- C.if
- D.which
— Why are you so popular with your students?
— As a teacher, I seldom give my students so difficult a problem ____ they cannot work out.
A. as B. that C. if D. which
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