СРОЧНО! ПОМОГИТЕ ПОЖАЛУЙСТА

Vocabulary. Complete the sentences with the correct word:
heavy, tired, homesick, crowded, currency, city centre
1. My father hates driving in... traffic
2. Mary spent a day in Moscow, but found the streets very....
3. Tom doesn't like to stay in the country because he always gets...
4. He was … because he worked too much last Sunday
5. How can I get to the....?
6. What ... do use in your country?​