A stranger started walking about in the hall,       to find the main office.

It will take a long time for the effective use of natural resources _________.

_________ and having two beautiful daughters never allow him to look down upon women.

--Why will you hang that photograph on the wall?
--__________ visitors of the memorial days of the Long March, Sir.

When________ to danger and conflict, men tend to increase blood pressure, ________ nervous and anxious.

_______ an important decision more on emotion（情感）than on reason, you will regret it sooner or later.

It’s such a surprise! Never did she dream of _______ a chance for her to be sent abroad for further study.

_____ in a simple living atmosphere was what her parents wished for.

Coming into the room, I found them _______ at the table, ________ chess.

Taobao.com has begun selling tickets online for international flights, ______ to cut the market share of Ctrip.com and other competitors.