How many years does it usually take for a student to do a Master degree in the U.S.？A.

How many years does it take for a student to do a Bachelor degree in the U.K.？A.4B.2C.

How many hours of sleep does the woman usually get？A．Four.B．Five.C．Eight.D．Ten.

听力原文：W: How many hours does your father work every day？M: Well, he usually works seven

How does Alex Baker plan to develop the magazine next year？A．By changing its design.B．By a

How does the medical profession regard the bypass operation？A．Many doctors believe it to b

In "How much does it cost to study in Cambridge for one year？" how much is ______ of the s