$1$. Although it was raining heavily, they went out for a walk.

$2$. Even though she was very tired, she kept working until midnight.

$3$. Though he studied very hard, he didn’t pass the exam.

$4$. Although the food was delicious, he didn’t eat much.

$5$. Even though she was in great pain, she didn’t give up.

$6$. Though they were late, they managed to catch the train.

$7$. Although the weather was bad, they still decided to go hiking.

$-$ Giải thích:

$+$ Although / Even though / Though = "mặc dù", diễn tả sự đối lập.

$+$ Even though nhấn mạnh hơn.

$+$ Though thường dùng trong văn nói.