Never fail to be _________ /’θkfl/ to the people around you.

“You can’t judge a book by its cover,” ________ .

Was it by cutting down staff _ _she saved the firm?—- No, it was by improving work efficiency.

Tomorrow is Mother’s Day． I want ______ a special gift for my mum．

下列各句中，没有语病的一句是（ ）