6. Tom failed the exam because of his laziness
=> Because Tom
7. It was raining so we decided to put off the meeting
=> We decided
8. Happy New Year is a song. It is sung at Tet
=> Happy New Year is
9. The scientist has won the Nobel Prize. He discovered a new planet
=>
10. Unless he does exercise regularly, he will gain weight
=> He will gain weight if
6. Tom failed the exam because of his laziness
=> Because Tom was lazy, he failed the exam
7. It was raining so we decided to put off the meeting
=> We decided to put off the meeting because it was raining
8. Happy New Year is a song. It is sung at Tet
=> Happy New Year is a song which is sung at Tet
9. The scientist has won the Nobel Prize. He discovered a new planet
=> The scientist, who discovered a new planet, has won the Nobel Prize
10. Unless he does exercise regularly, he will gain weight
=> He will gain weight if he doesn't do exercise regularly
#Bright
6. Because Tom was lazy, he failed the exam.
7. We decided to put off the meeting because it was raining.
8. Happy New Year is a song that is sung at Tet.
9. The scientist who discovered a new planet has won the Nobel Prize.
10. He will gain weight if he doesn't exercise regularly.