if you don not improve your handwriting , youwill lose marks in the exam(改为同义句）____ ____ _____your handwriting , youwill lose marks in the exam.

if you don not improve your handwriting , youwill lose marks in the exam(改为同义句）____ ____ _____your handwriting , youwill lose marks in the exam.
if you don not improve your handwriting , youwill lose marks in the exam(改为同义句）
____ ____ _____your handwriting , youwill lose marks in the exam.

if you don not improve your handwriting , youwill lose marks in the exam(改为同义句）____ ____ _____your handwriting , youwill lose marks in the exam.
Unless you improve your handwriting ,youwill lose marks in the exam.
除非你改善一下你的书法,否则你就会在考试中失分的.

Unless you improve your handwriting , youwill lose marks in the exam.

应该填Unless you improve.意思是除非你改进你的书写,你就会在考试中丢分.