题目
题型:不详难度:来源:
A.had not been heard of | B.has not been heard of |
C.had not heard of | D.has not heard of |
答案
解析
核心考点
试题【 His sister left home in 1998,and ________ since.A.had not been heard ofB.has no】;主要考察你对一般现在时等知识点的理解。[详细]
举一反三
—Because large quantities of water ________.
A.have polluted | B.is being polluted |
C.has been polluted | D.have been polluted |
A.was felt | B.is felt | C.felt | D.feels |
—Will this one ________?
A.writes;do | B.writes;work |
C.is written;do | D.is written;work |
A.keeps | B.keep | C.have kept | D.had kept |
A.show;are | B.shows;are |
C.show;is | D.shows;is |
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