In the reading room, we found her 　　　 at a desk, with her attention _____ 　　　 on a book. 

with all the money     ,the man can't afford a ticket.

Every morning Helen goes for a jog, with her dog ________ after her. 

________ my teacher helping me, I could easily finish the work today.

Many strange new means of transport have been developed in our century, the strangest of _______ being perhaps the hovercraft(气垫船).