Дайте решение, срочно...Underline the correct word. 1. A pencil is ___

Дайте решение, безотлагательно...
Underline the correct word.
1. A pencil is ___ (cheap) than a computer
2. Margarita is _____ (tall) than Martha
3. An airplane is ______ (fast) than a bike
4. My grandmother is old. She is _________than my mother. (old)
5. I cant buy that car. Its ________than a house. (expensive)
6. Ann, be in silence!. You are the________________student in the class (noisy)
7.I think Shakira is ____________________than Lady Gaga (pretty)