–Tom wishes to win the first prize in the coming competition. –Yes, I heard that. ______ his goal set, he is really busy these days 

With many problems ________, the newly selected president will have a hard time.

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

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

She lay lazily in the armchair under the tree, the sun _____down through the broad leaves.