The house__________I lived in during my childhood is for sale.
A. which            B. where             C. when             D. what

Question 17 [583111]: Renewable energy sources began _________as an alternative to fossil fuels.
A. be used          B. to use             C. being use                   D. to be used
Question 18 [583112]: _________________secretly gotten married without anyone knowing.
A. He was rumored to have                       B. It was rumored that
C. He was rumored to                                D. They were rumored that he had
Question 19 [583113]: He enjoys _____________for his hard work by his colleagues. A. having recognized     B. recognizing      C. being recognized       D. to be recognized

Nêu VD về góc so le trong và góc trong cùng phía.

12/7+5/11