Question

I'll lend it to you ________ you return it tomorrow．

[　　]

A．

by means of

B．

so that

C．

unless

D．

on condition that

Answer 1

答案：D
解析：

by means of是介词短语，后面要跟名词或是ing。so that, unless, on condition that都可以引导从句，只有on condition that可以引导条件状语从句。