单项选择题

— Peter, where did you guys go for the summer vacation
— We （）working for months，so we went to the beach to relax ourselves．

A．were
B．have been
C．had been
D．will be

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单项选择题

Thousands of foreigners were （）to the Shanghai World Expo the day it opened．

A．attended
B．attained
C．attracted
D．attached

单项选择题

— I haven't got the reference book yet．but I'll have a test on the subject next month．— Don't worry．You （）have it by Friday．

A．could
B．shall
C．must
D．may

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