.Put the books back ________ they belong after you have finished them.
_____ his face, the young man must be over 20.
_____ it rain tomorrow, we would have to put off the visit to the Yangpu Bridge.
He broke his legs while _____.
If you go to Xi’an, you will find the palaces there more magnificent than commonly___.
—— He hasn’t gone to the office up to now. —— Well, he _____.