Scientists have advanced many theories about why human beings cry tears , none of ______ has been proved.A. whomB. whichC. whatD. that
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We will put off the picnic in the park until next week, ____ the weather may be better.A. thatB. whereC. whichD. when
Opposite is St.Paul's Church,___you can hear some lovely music.A. which B.that C.when D.where
He wrote many children’ s books, nearly half of____ were published in the 1990s.A. whomB. whichC. themD. that
Creating an atmosphereemployees feel part of a team is a big challenge.A. asB. whose C. in which D. at which