Williamhascuthissmoking_____tofivecigarettesaday.
A
cut down “削减，减少 ”;cut sth. down to “ 把⋯⋯ 减到(什么程度) ”，是固定搭配，而且符合题意。
Hewasvery_____togo，buthehadnochoice.
Theteachergave_____theexaminationpaper.
Hedrovefastandarrivedanhour_____ofschedule.
Mywalletisnowheretobefound.I_____itwhenIwasonthebus.
Thegirlwhofoundtheringreceivedagenerous_____offivepounds.
