Complete the sentences using a comparative from of the adjectives/adverbs from the list below: difficult,early, interesting, crowded,high, loudly, sunny, attentive, often.

1. This exam is more difficult than the last one. 2. She wakes up earlier than her brother. 3. This book is more interesting than that one. 4. The train is usually more crowded in the morning. 5. This mountain is higher than the one we climbed last year. 6. He speaks more loudly in large groups. 7. Today is sunnier than yesterday. 8. She is more attentive in class than her friend. 9. I exercise more often now than I did last year.