The children were left _____ of a neighbor when they went on holiday.

This is no-smoking place. Can’t you see the sign—Oh, sorry. I ______ it.

People have planted a great many trees in order to________wind and sand in the desert. [ ]

Is there anyone in the classroom?—No, not only the students but also the teacher　　　　to watch the opening ceremony of the Asian Beach Games.

We had____8-day holiday,but some of us felt unhappy because of ____heavy traffic on the highways.