1. How heavy are you? (What)
what is you weight
2. What is the length of the Nile river? (How)
how long is the Nile river
3. He didn't take a taxi. He walked instead. (of)
he walked instead of taking a taxi
4.We can learn more about the undersea world because we have special TV cameras. (thanks to)
We can learn more about the undersea world thanks to special TV cameras
5. He spent two hours cleaning the window yesterday. (took)
it took him two hours to clean the window yesterday
6. You oughtn't to play soccer in the street. (had better)
you had better play soccer in the street.
7. She likes reading books better than watching TV. (prefers)
she prefers reading books to watching TV.