When you are in your school dining hall during lunchtime， you may not feel lonely _______ you can find someone to have lunch with．（ ）
A．ifB．unlessC．afterD．because
When you are in your school dining hall during lunchtime， you may not feel lonely _______ you can find someone to have lunch with．（ ）
A．ifB．unlessC．afterD．because
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