A.don’t recognize | B.hadn’t recognized |
C.haven’t recognized | D.didn’t recognize |
A.ir is required that one has profound knowledge |
B.profound knowledge is important |
C.profound knowledge is a must |
D.one needs to have profound knowledge |
A.to everyone’s taste | B.to everyone’s joy |
C.to someone’s measure | D.to anyone’s surprise |
A.Not only does the Internet expand | B.Not only expands the Internet |
C.Not only the Internet expands | D.Not only the Internet does expand |
A.in which | B.about which | C./ | D.that |
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