Learn the Difference between “次(cì)” and “遍(biàn)”

Please choose the correct answer to fill in the blanks.

Bìngrén: Yīsheng, zhèzhǒng yào zěnme chī? 病人:         医生,  这种         药    怎么    吃? Patient: Doctor, how is this medicine to be taken? Yīsheng: Yìtiān chī sān___,  yí __chī liǎngpiàn. 医生:        一天   吃  三  ___,一__吃   两片。 Doctor: …