【题目】【原创】He knew the problem was serious and promised to look into it _____ he reached office.
A.at that moment
B.for that moment
C.immediately
D.soon
在线课程【答案】C
【解析】
试题分析∶考查连词。句意：他知道这个问题很严重，并承诺一到达办公室就去调查这个问题。此题考查连词。immediately= as soon as，可以引导时间状语从句，意为立刻，一……就……。结合句意，故答案为C。
考点∶考查连词