Làm nhanh gấp ạ!!!!!!!

a. Mark the letter A, B, C, or D to indicate the word whose main 1. A. physics B. history C. chemistry D. biology 2. A. important B. beautiful C. difficult D. excellent 3. A. activity B.correct C. camera D. banana 4. A. chicken B.museum C. hungry D. favourite 5. A. convenience В. crowd ...