Tom received an invitation to dinner, and with his work ____, he gladly accepted it.

______, a man who expresses himself effectively is sure to succeed more rapidly than a man whose command of English is poor. 

I received an invitation to dinner from my friend，and with my work 　　　　，I gladly accepted it.

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

I watched everyone hurrying to and fro, most with eyes ____ the ground.