English is____useful lunguage.It is often used as____second language.A.the;the B.a;a C.an;a D.a;the序数词前应加the,那么second前应该加the.为什么答案为B,而不是D呢?

England is _____European country.And English is____useful language.A.an;a B.a;a C.a;an D.an;an同志们,选哪个,为啥? 1.English is____useful language people in many countries are____it.A.an;used B.a;using C.an;using D.a;use English is____useful lunguage.It is often used as____second language.A.the;the B.a;a C.an;a D.a;the序数词前应加the,那么second前应该加the.为什么答案为B,而不是D呢? That is____useful piece of information about this clothing.A.a B.an C.the D./ English English English English~ English English English english English. english english English English English