It will be casting pearls before______because he does not know how to appreciate favors.A．

According to the law of that country, the Parliament will have to be ______ before the Gen

In some areas China is（)the developed countries, but it will take some years before w

You will see to it that everything is ready before the guests arrive. The underlined part

They have come to the conclusion ________ this winter will be even colder than before.

It can be inferred from paragraph 2 that before t

Before______for the job you will be required to