Tom is _______ learning English. To learn it well, he abandons all his hobbies.

The players in Super Brain can work out different problems in a very short time. – they are! They have super brains indeed.

The school _________ I studied for only two years was three kilometers away [ ]

Evidence has been piled up ______ drinking waterafter getting up in the morning contributes to one’s health.

In Singapore, people who litter or dirty the streets are most likely .