With so many problems __________, the new mayor will have a hard time in his poor town.
________ the important documents were needed_______.
We are waiting until the weather ________ a little.
--He must have received a good education in his childhood, ________ he? --________, he is polite and well-behaved and acts like a gentleman.
An increasing number of countries have been ________ China as a threatening power recently.
All the citizens here strongly insist those found ________ “harmful” advertisement in the streets ________ punished strictly.