Neither Kate nor her cousin _____ to Russia, but _____ of them have known the country very well.

The frequent terrible coal mine accidents killed morethan 1000 people in China last year.—_______.

How often do you go swimming, Alice—_____.

Only that factory we visited yesterday __________ this kind of machines.

Why did the teacher ask for me?— He wanted you to _________ your absence last night. [ ]