Question

【题目】They pay for the treatment because ORBIS is a charity.

A. needn't to B. must

C. don't need to D. have to

Answer 1

【答案】C

【解析】

试题分析：句意：他们不必支付医疗费，因为奥比斯是一个慈善机构。needn't to中needn’t是情态动词，应接动词原形，不接to； must必须； don’t need to不必； have to必须；根据 because ORBIS is a charity.可知奥比斯是慈善机构，不用付钱，故选C。