Complete the sentences. There is one extra word.
1. Don't .... water - turn the tap off while brushing your teeth.
2. Our .... of English is getring better day be day.
3. Don't forget to flush the .... after uaing it.
4. Did you know that a ... equals one thousand kilograms.
ton, knowledge, wide, toilet, waste, pardon, mind, tyre, dump, couple, science