1.He sat in the sofa, watching (watch) a match.
2.It wasn't within my power to help her.
3.The pianist surrounded (surround) by a crowd of fans will hold a concert in the Workers' Stadium.
4.The boy leading (lead) the way, we had no trouble finding the strange cave.
5.Uncle George didn't settle down until he was nearly fifty.
6.She laughed and chatted happily with her classmates.
7.The boy's parents, who let him play football indoors, rather than the boy were (be) to blame for the broken window.