_You’d better take something to read when you go to see the doctor_______ you have to wait

(2013·四川成都高中毕业班第一次诊断)My mother and her old friends talked of some things and people ________ they remembered in the school.

Vera is ______ in English class. She puts up her hand every time her teacher asks a question.

Don’t defend him any more. It’s obvious that he _________ destroyed the fence of the garden even without apology.

To master a foreign language, ______.