tailieunhanh - Level TOEFL lesson 12

Tham khảo tài liệu 'level toefl lesson 12', ngoại ngữ, toefl - ielts - toeic phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Level TOEFL lesson 12 1. did Arthur realize that there was danger. D u A Upon entering the store u B When he entered the store u C After he had entered the store u D Only after entering the store 2. In mathematics a variable is a symbol some element of a set. C u A and representing u B represents u C that represents u D represents that 3. Few natural elements exist in that they are rarely seen in their natural environments. A u A such small quantities u B so small quantities u C very small quantities u D small quantity 4. The janitor refused to unlock the classroom door because he busy. C u A too u B always u C was u D himself 5. which is the highest in the range appears challenging. A u A Climbing the mountain u B The mountains u C Up the mountain u D The mountain that .

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