How many shoes ___ this year？A、have been producedB、were producedC、produced

Many years ago， a lot of factories were _______ fr

How much has the company _________ this year？

I wonder how many years ago _______.A.did you father retireB.your father retiredC.has yo

This pair of shoes isn‘t good, but that pair is ________ better.A、 ratherB、 lessC、everD

__________？ —About six yuan a kilo. A. How old B. How much C. How often D. How many

How many people were killed in the plane crash in March this year？A．8.B．7.C．18.D．14