[Oyk]

not  Mari kita rakyat Singapura sama-sama menuju,bahagia. Cita-cita kita yang mulia ...meh  

Anyway apart declare Malay as Sg national language,
founding fathers also set Malay, Mandarin Chinese, Tamil, and English as official languages
and English as working language.

So Mysian should stop compare Sg with them. 
therefore agree to Baharudin to say there was nothing wrong with being a Malaysian citizen and being asked by officials to communicate in Malay.

A Thai retuning to Thailand is expected to speak Thai with the immigration officer at a Thai airport.

If he speaks English, the immigration officer may think he's trying to be funny.

Malaysia's working language is Bahasa Malaysia and all Malaysians are expected to speak it with government officials. It does not matter if the Malaysian is a Tamil, a Han whatever. English is neither Malaysia's national language nor working language.