On a bustling street, you're walking and suddenly bump into someone... ... 1. 不好意思,你没事儿吧？ bù hǎo yì sī, nǐ méi shì ér ba ? Sorry, are you okay? 2. 对不起,我来晚了。 duì bù qǐ, wǒ lái wǎn le . Sorry, I’m late. 3. 抱歉,不能帮你了。 bào qiàn, bù néng bāng nǐ le . Sorry, I can’t help you. Resource: YMC Learn Chinese on YouTube