6. Lan is 18 years old. My younger sister is also 18 years old. 
→ Lan is      my younger sister. (YOUNG)
7. If you don’t lend us some money, we can’t go to the theater. 
→ We can’t go to the theater     some money. (UNLESS)
8. The weather was good on our holiday.
→ We     on our holiday. (HAD)
9. Children can buy hot lunches at most schools. 
→ At most schools,     children to buy hot lunches. (POSSIBLE)
10. Everyone says that the band is planning to go on a world tour next year. 
→ The band       planning to go on a world tour next year. (SAID)