1.When the doctor arrived, he realized that the patient …… . A)were dying B)were telling
C)was dying D)was telling
2. George …… when his brother came back. A)was studying B)studied C) were studying D)studies
3.You called me as I ……. to the train station. A)was walking B)were walking C) walked D)walks
4. as/while she…… dinner, the telephone …… . A)were cooking-rang B)was cooking-was ringing
C)cooked- was ringing D)was cooking-rang
5. While the teacher …… the lesson, the students …… much noise.
A)Was giving-were making B)were giving-was making C) gave – made D)was giving- made