Англ язык-нужна помощь

Задали задание, я в таких не разбираюсь, помогите. В общем задание такое-нужно в предложения вставить слова: at least, over, nearly, about, more than, around, fewer than. Вот предложения:
1. Mandarin Chinese is spoken by ...836 million
2. ..333 million speak Hindi.
3. Spanish is spoken by ...332 million.
4. The number of native English speakers is ...322 million.
5. Bengali and Arabic are spoken by ...190 million each.
6. Russian is spoken by ...170 million people.
7. Portuguese has ...160 million speakers.
8. Japanese is the native language for ...125 million.
9. Then follow German, French and Malay with ...100 million speakers.