People are living in_______ world where mouse clicks rule our life, so online searches have become_______ must.
A．the; / B．/; a C．a; a D．a; the
All those second-hand goods are sold at ____ before．
A．30％ as lower price as B．30％ as low a price as
C．as 30％ low price as D．30％ lower price than
——The switch to more low-carbon energy, I think, is _____.
——I agree with you.
A．in a way B．on the way C．by the way D．in the way
Many a student ____ going to have themselves ____ in the hospital.
A．is ; to examine B．are ; examine C．is ; examined D．are ; examining
Three minutes earlier ____ we could have caught the early train to Philadelphia.
A．or B．but C．and D．so
Many people have been ill from a strange disease these days, _____ we’ve never heard of before.
A．it B．that C．one D．this
