Comeplete each of the sentences with an appropriate preposition

Comeplete each of the sentences with an appropriate preposition:

1. The wine had made him incapable.....thinking clearly
2. He was accused....being disloyal....the government.
3. How much time do you spend...homework?
4. Good friendship should be based....mutual undertanding
5. Do you keep in touch....any school friends?
6. Some adults have a total lack....sympathy...young people
7. He's more concerned...what people think about him than anything else
8. She had been briefly acquainted....him more than 20 years earlier
9. She bought...him very often.
10. Some people take...interest with wnthusiasm, but they are soon tired...it.