People have planted a great many trees in order to wind and sand in the desert.

How close parents are to their children ________ a strong influence on the development of the children’s characters.

The skirt ______ soft as if it is made of silk.

The family went to the Great Wall last Sunday, but theyfoundthemselves________whentheyreached the hotel.[ ]

________many times, but he still couldn’t remember my phone number