r and sufferings it caused by the war seventy years ago are the old woman’s ______memories, which can never be forgotten.

Do you know _________ an “o” and _________ “u” in the word “computer”

_______ at the traffic lights, please.

my classmates accidentally ____ he had cheatedin the last examination, or he wouldn’t have got so high a mark.

Criticism and self-criticism _____necessary _____ it helps us to correct mistakes.