She searched all the places where she _____ have left her necklace but it was all in vain.

When_____ help, one often says “Thank you” or “It’s kind of you” [ ]

28．Besides hotels，there are also families_____visitors can experience the warmth and kindness of the local people

I think students should have mobile phones to call their parents.–_______ . They often use them to play game instead.

I have no idea what to wear for the singing contest—Well, the dress_____ you bought yesterday may be the best choice.