When I passed this afternoon, I saw a little boy was lying on the grass, his hands _____ under his head.

 With his attention _____ on his book, he didn’t notice me enter his study.

Walter offered us a lift when he was leaving the office, but our work _______, we refused his offer.

With two children _____ middle school, the parents are working hard.

With no one to________ in such a frightening situation，she felt very helpless.