Today many physical bookstores ________ down with financial difficulties, inflexible management strategies and competitive pressure from online bookstores.
A．had closed B．having closed
C．being closed D．are closing
—Look, I've got admission to Harvard University for a shortterm study next semester.
—How fantastic! You ________ a different university life then.
A．have experienced B．will be experiencing
C．have been experiencing D．will have experienced
—Car prices have been going down sharply in the last 20 years.
—It's not surprising because the law of market ________ the price of a product.
A．is controlling B．controls
C．has controlled D．controlled
—We'll go to the party to be held in Qinghai Grand Theater at 8 tonight. Could you join us?
—I'm afraid I can't. I ________ the holiday plan with my friends.
A．am discussing B．have discussed
C．will be discussing D．will have discussed
Mother reminds, “________ rain, take an umbrella.” as spring approaches.
A．Shall it B． It shall
C．Should it D．It should
—Jenny took the 8： 00 bus to Guangzhou this morning.
—Really? She ________ the 9：00 train. It's much more comfortable and safer to travel by train.
A．could have taken B．should take
C．must have taken D．can take
