名词、数词和主谓一致的几道选择题~

名词、数词和主谓一致的几道选择题~
①Double anti-theft doors of this type____well and are the best-seller.A.locks B.lock C.is locked D.are locked 我选了A.②No one in the department but Tom and I____that the director is going to resign.A.knows B.know C.have known D.am to know ③Soon the thief was caught and fined five times____he should have paid.A.money as much as B.the amount of money C.the money as D.more money as 我选A.④—Why does the lake smell terrible?—Because large quantities of water____.A.have polluted B.is being polluted C.has been polluted D.have been polluted 我选了C.求大师分析讲解.