---It’s hard for me to go to sleep.-Try to the amount of coffee you drink during the da

问题补充：

---It’s hard for me to go to sleep.

---Try to the amount of coffee you drink during the day.

A. cut up

B. cut in

C. cut off

D. cut down

答案：

A. cut up

B. cut in

C. cut off

(答案→)D. cut down

解析： 词义辨析。cut up切碎；cut in插嘴，干预；cut off切[隔]断；剪[切，砍]下；cut down裁短；减少。句意：对我来说入睡很难。尽量减少你白天喝咖啡的数量。所以选D。