单选题
He hopes he can visit the United Nations building while he ______ in New York next summer.
A) has been
B) is
C) will be
D) shall be
【正确答案】
B
【答案解析】[解析] 在由if even if as,when,as soon as,until till,after,before,whenever,while等词引导的条件或时间状语从句中,通常用一般现在时表示将来时间。例如:We plan to climb the Great Wall if we visit China.(如果我们去中国旅行的话,我们打算去登长城。)