________occurred to me that I had left my shirt on the playground. [ ]

“It gives me great joy and I feel more pressure than I did _______ I won in China,” Ding Junhui said.

―I’m sorry I’m late.―_________. Come earlier next time.

Would youplease__________the paper for me and see if there are any obvious(明显的) mistakes—Of course I will.

My brother has been teaching ________ he was 21 years old.