“Good morning，everybody！"said the teacher,Donna. “Is everybody here？Oh,where is Tom？"

“He is ill at home,Miss Donna，" one student said.

“Sorry to hear that. Oh，well. Let's get started,okay？Today we're studying participles（分词）as adjectives.Students are _______ confused（困惑的）about the present and past participle when they _______ about them at first,so we will practice this a lot. Now we're just going to practice the present participle.

"The present participle tell us what feeling the subject is causing. For example,' Grammar is boring' means that the _______-grammar-causes a feeling of boredom. If we say,’ The roller coaster is exciting,’ we are saying that the roller coaster causes a feeling of _______ Any questions?"

The classroom was _______. Donna looked at the students' faces. They were confused. She knew this would _______ a while. But finally, the faster students _______, and then they helped the slower students. By the end of the class, most of the students had felt _______  using the present participle.

Donna cleaned the blackboard and put some new _______ on it. She felt a little bit excited ________ the look of understanding came to their faces.