—Is your brother in?—No. he comes back I’ll tell you.A. AsB. As soon asC. AfterD. Since

问题补充：

—Is your brother in?

—No. he comes back, I’ll tell you.

A. As

B. As soon as

C. After

D. Since

答案：

A. As

(答案→)B. As soon as

C. After

D. Since

解析：句意：你的弟弟在家吗？不。他一回来，我就告诉你。As当……的时候； As soon as一……就； After在……之后；Since自从。根据语境可知选B。