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)