an extremely precarious situation(pressing danger)

a standing bookcase(a very learned scholar)

Mobilize too many troops

adopt a piecemeal approach(do something bit by bit,off and on; act by piecemeal)

view somebody in a new light(regard with special respect)

abruptly change one's ways(become an instant saint)

Throw out the baby with the bath water

above somebody's bend(beyond one's grasp)

fight between the two tigers

a heavy fall of snow in summer

postman

reach the end of the year without being in debt

kick somebody when he is down

a continuous row of houses

operatic players

leave a good name for a hundred generations(leave a good name to posterity)

be experienced and versed in one's work

decide on the spot(make changes as the situation demands)

rove all over the world

score three times in a row(win three matches in succession)