---Henry, please call us as soon as you _____ Hawaii.
---OK. I’ll do that, Mom.
A. arrive in B. are arriving in C. will arrive in
---Henry, please call us as soon as you _____ Hawaii.
---OK. I’ll do that, Mom.
A. arrive in B. are arriving in C. will arrive in
A
【解析】句意：——亨利，你一到夏威夷，请你告诉我。——好的。妈妈，我会的。as soon as引导的时间状语从句，用一般现在时表示一般将来时，故选A。