问题 选择题
We are working _________ that everyone invited will turn up. 
A. assume
B. to assume
C. in the assumption
D. on the assumption
 
答案

答案:D

on the assumption意为“假定”,根据句意“我们假定每一个应邀者都会到场”,所以答案为D。

判断题
单项选择题