用所给动词的适当形式填空

1. Last night my friend Jim __________(have) a birthday party.

2. I __________(sleep) at this time yesterday.

3. When did you start __________(learn) English.

4. What were you __________(wear)?

5. Yesterday I met a __________(strange) in the street.

6. Mr. Wang teaches __________(we) English.

7. They __________(go) to the cinema when I met them on the road.

急性坏死性龈炎的致病微生物是

A．伴放线放线杆菌与螺旋体

B．梭形杆菌与牙龈卟啉菌

C．梭形杆菌与螺旋体

D．粘性放线菌与螺旋体

E．中间普氏菌与牙龈卟啉菌