This is _____uniform.选an ,a,还是the

this is a(an) university?a 还是an? This is _____easy exercise填an还是a there is ___university near the park (a/an/the/this) this is ____UFO A.a B.an C.the This is ( )orange car. A.a B.an C.the ls this an apple?的肯定回答是Yes,this is an apple.还是Yes,it is an a this is an onion and that is --- beef 横杠上添a an 还是/ This is an ID card还是This is a ID card This is __(a/an/the)“h" in "healthy" These are an apple and a pear.还是This is an apple and a pear. ____ second day of this month is September 2nd.(A The An /)选 This is my answer to the question.A the B / C a D an 应该选什么啊快