Jack is good, hard-working and intelligent. _____, I can’t speak too highly of him.               

His efforts to raise money for his program were _______ because no one showed any intention to take a cent out of their pockets.

6．－How did the robber get in?
－       an open window on the first floor.

 
14．This doubt had been in my mind for some time, but the research still went on____some reasons.

The girl told her mother that she would give her a call______ her arrival.

Barack Obama has taken personal blame ________ the security failures which led ________ the attempt to blow up a plane on Christmas Day.

It is well-known that humans differ _____ other animals in their ability to speak.
A. with           B. between           C. onto            from

Before entering space rockets must escape _____ the earth’s gravity.

    
25. Jenny nearly missed the flight__________doing too much shopping.

    
13. Everybody was touched            words after they heard her moving story.