He will come to understand your efforts sooner or later. It's just a matter of_______.
---Would you like me to help you with the homework?---______________ . But I can manage it myself.
Excuse me. I _______ I was blocking(挡) your way.
I ______ go to bed______ my mother came back home.
---She’s never been to Hainan, ________?---________. She went there last week for the first time.
---Why did you buy a radio?--- ______ English.