how long will it be we know the result of the english examination?how long will it be _____ we know the result of the english examination?A Since B Before Cuntil

how long will it be we know the result of the english examination?how long will it be _____ we know the result of the english examination?A Since B Before Cuntil
how long will it be we know the result of the english examination?
how long will it be _____ we know the result of the english examination?
A Since B Before Cuntil

how long will it be we know the result of the english examination?how long will it be _____ we know the result of the english examination?A Since B Before Cuntil
选答案B,意思为在我们还要多久才能知道英语考试成绩

before,在……之前