The teacher has done his best to help all students. However, none of them made
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Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
The teacher has done his best to help all students. However, none of them made any effort on their part.
The teacher has done his best to help all students, then, none of them made any effort on their part
Although the teacher has done his best to help all students, none of them made any effort on their part
Because the teacher has done his best to help all students, none of them made any effort on their part
If the teacher has done his best to help all students, none of them made any effort on their part
Giải thích
Đáp án B