Đề bài : Fill in each blank with on suitable preposition
----- Nội dung dịch tự động từ ảnh -----
47- She apologized............... me .......
.................keeping me waiting.
48- The headmaster disapproved .................... his behavior.
49- My boss was angry.....................me when I arrived late.
50- Tam has given ................. his habit............playing truant.
51- This expression is used only ................... speaking.