问题补充：
It’s not early so you’d better start .
A. on time
B. right away
C. at present
D. for the present
答案：
A. on time
(答案→)B. right away
C. at present
D. for the present
解析：词组辨析。这件事不容易你最好立刻行动。A. on time 按时B. right away 立刻C. at present 目前D. for the present 暂时根据语境选B
