Adjective or adverb? Choose the correct alternative.
1. The flowers in the garden smell wonderful / wonderfully.
2. He speaks fluent / fluently in three languages.
3. The movie was so interesting / interestingly that I watched it twice.
4. She looked happy / happily when she received the gift.
5. The teacher explained the lesson clear / clearly.
6. His explanation was simple / simply, but effective.
7. The pizza tasted delicious/deliciously.