1.It's 6:30 now.I am getting up.
2.She is speaking.
3.The children are singing.
4.I am listening to the radio.
5.My brother is writing.
6.We are preparing our lesson.
7.Our teachers are having a meeting.
8.The dog is running very fast.
9.The students are swimming across the river.
10.Look at the picture.The children are flying kites in the park.
11.We are making model planes these days.
12.Your sister is looking for her pen.
13.He is telling us an interesting story.
14.We are having a holiday today.
15.What are you doing these days?
16.You are speaking so quickly.你讲得太快了.
17.Jane’s studying in our school this term.
18.She is preparing her lessons now.
19.They are doing their best to finish the work in time.
20.The workers are building a large factory.