It was last Saturday ________ we visited the History Museum.
He is always telling lies. Don’t be __________ by his sweet words.
_______ the days going on, the weather is becoming hotter and hotter.
We tried to ______ his doubts and let him tell the truth.
Advertisements are a good __________ sell products or services.
Violence (暴力) computer games may have a bad ____________ on children.