Điền giới từ thích hợp vào chỗ trống, hoàn thành câu: I live ___20 Oxford Street

1. I live ______20 Oxford Street.

a. in          b. at       c. on                     d. from

2. It was generous _______ you to share your food with me.

a. of          b. to          c. for                     d. about

3. I was late, but ________ they waited for me.

a. lovely            b. luckily           c. extremely                              d. silly