He went home for lunch the clock struck twelve.
A. while
B. immediately
Cright away
D. at once
网友回答
A. while
(答案→)B. immediately
C. right away
D. at once
解析：从属连词immediately可表示从句的动作一发生，主句的动作随即发生，常译为“一……就……”本题大意，一到12点他就回家去吃午饭。故B正确。 A. while 并列连词，“而，却”，表示对比。C. right away 立刻，马上 D. at once 立刻