A good advertisement, _____ people attach positive meanings, can contribute to the sales of a product.
It is sad to see him go but it won’t make a(n) ___ to the way we conduct our affairs.
We were dancing to ____ music when all of ____ sudden the power went out and we were left in the dark.
Great changes have taken place in my home town. It’s no longer ______ it was ten years ago, ______ I spent my childhood there.
Wherever he traveled in those days, he always _______ down what he saw and heard.
If you want to make progress, you’d better be strict _____ yourself ______your studies.