I can lend you the money________ you give it back at the end of three weeks．
A.in a condition that
B.on condition that
C.on one condition
D.on the condition if
网友回答
B解析on one condition介词短语作状语，意为“规定一个条件”，如：He allowed me to do it on one condition．他有条件地允许我做这件事。on condition that相当于as long as，意为“只要”，引导一个条件状语从句。