A.In a wordB.Of courseC.By the wayD.For example
A. In a word
B. Of course
C. By the way
D. For example
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A.lessB.leastC.mostD.best
A. less
B. least
C. most
D. best
A.poorB.workingC.richestD.ordinary
A. poor
B. working
C. richest
D. ordinary
A.soB.suchC.similarD.some
A. so
B. such
C. similar
D. some
A.protectB.secureC.guardD.ensure
A. protect
B. secure
C. guard
D. ensure