1.Look!There is ( )“u” on the blackboard. A. a B. an C. the D. /2.There is ( )“a”,( )“n”and ( )“t” in the word “ant”. A.a,a,a B.an,an,a C. a,an,a D.an,a,a正确答案上这两题的答案分别是A、B,但不知为什么,请各位指教!