Bài 1: Điền giới từ phù hợp vào chỗ trống

Bài 2: Chọn phương án chính xác nhất

1. What she was worried …. most is her little boy‘s mental health.

2. Since hearing that Peter won’t come, Linda looks rather ….

3. He was standing in front of her house all afternoon with a …. look on his face.

4. She had me …. back there. I thought she wouldn’t come to the meeting on time.

5. Hoa was worried …. when she heard her daughter had been injured in a car accident.