The classroom with windows_____ north wants_______ badly, so we’d better move the students into the classroom next door. 

With a lot of difficult problems_____, the newly-elected president is having a hard time. 

.Professor White has received a letter ___ to give a lecture in Peking University.

George Gould too visited the tomb, ____ a high fever the next day.

 The young mother walked off, leaving the little boy ___________ in the room.