5.I ________ (be) watching TV when he came to see me.　

4.I ________ (meet) him yesterday.　

3.They are going to ________ (have) a picnic on this weekend.　

2.Listen!Who ________ (cry) in the next room?　

1.Jenny often ________ (play) the piano in the morning,but sometimes in the afternoon.

10.It is d　　 to cross the street when the traffic lights are red.　

答案：Ⅰ.1.successful　2.suppose　3.crowded　4.stressed　5.expert　6.documents　7.graduated　8.designed　9.solve　10.dangerous

9.The company has a lot of difficulty to s　　.　

8.The table is specially d　　 for children.　

7.In 1999,he g　　 from Nankai University.　

6.These are secret d　　.Nobody are allowed to look at them.