对答案有疑问的一道题

The sale of government surplus machinery will begin at  9:00 a.m and continue until the supply lasts.

(A )will begin at  9:00 a.m and continue until the supply lasts

(B)begins at 9:a.m, continuing until the suppply lasts

(C)will begin at .9:a.m, and , until the supply lasts, will continue

(D)begins at 9:a.m, and , as long as the supply may last, it continues

(E)will begin at 9:a.m and continue as long as the supply lasts

正确答案为Ｅ．可是我认为Ｅ中continue的用法不对．若continue　与begin 并列，则补全为will continue；若continue与will begin 并列，则需用continues．请各位ＮＮ赐教