Tim was an excellent student at high school. He tried his best.

44/50

If Tim didn’t try his best, he would be an excellent student at high school.

If Tim hadn’t tried his best, he would be an excellent student at high school.

If Tim hadn’t tried his best, he would not have been an excellent student at high school.

If Tim hadn’t tried his best, he would have been an excellent student at high school.

Giải thích

Tạm dịch:

Tim là một học sinh xuất sắc ở trường trung học. Anh ta đã cố gắng hết sức.

Nếu Tim đã không cố gắng hết sức, anh ta sẽ không trở thành một học sinh xuất sắc ở trường trung học.

Giải thích: C

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