He started to learn English in 1990 and in the years ________ he kept on using it in his work.
During the period of recent terrorist activities, people _____ not to touch an unattended bag.
—What a great cook your sister is! —Yeah! We ______ never have enough of her cookies.
It is difficult to find a satisfying job today.This job is great ________ salary, but it has some disadvantages.
Some old people don’t like pop songs because they can’t _____so much noise
I spent several years in France, ______ I never learnt to speak French.