In my point of view, the question is not _____ the world is going to have a new economic crisis,but when.[ ]
Today, we’ll discuss a number of cases___________beginners of English fail to use the language properly[ ]
orry to say this, but the room here is very dirty—______ I will ask someone to clean it right way
We should play a part in ______ the earth.
Sir, a Mr. Wang is waiting for you at the gate. ________ he come in or stay there?