英语there is __ u in university.是填a还是an?字母u前何时加an?请举例说明。

英语there is __ u in university.是填a还是an?字母u前何时加an?请举例说明。 There is __u and __ m in the word umbrella. there is __fand ___uin the word fun.用a,an填空 There is not __U in this word 怎么填?a、an、/ There is ___u,__s and ___ e in the word use怎么填空 There is ()uand()sin the word useful. There is ( )uand ( )s in the word us 改错：There is an u in the word us there is ( )u and( )n in the word aunt there is _m and_ u in the word menu. there is a u in the world ruler. There is ( ) u and ( ) r in the box.为什么? There is a U and anS in () use. 冠词练习用a,an,/There is __U'',___sand__ein the word usa____moon goes round ___earth. 用a,an填空 There is __u ___ s and ___ ein the word该怎么填,还有要怎么判断填哪个?要怎么判断？ There is ___ fand __uin the word four.A.an;a B,a;aC,an;an D,a;an 英语纠错(可能一个句子里有好几个)There is a f in the word flower.There is an u in the word use 英语There is__u' and __ f in the word fun A:a;an B:an;a C:a;a D:an;an选哪一个,为什么?