Put the verbs in brackets in the past simple or the past continuous tense

Ex1. Put the verbs in brackets in the past simple or the past continuous tense. 
1, he (sit) __ in a bar when I (see)__him. 
2, when I (go) __ out, the sun (shine) __.
3,The light (go) __ out while I (have) __tea. 
4,when it (rain) __,she (carry) __ an umbrella. 
5,we(walk)__to the station when it (begin) __to rain.
6,he(teach)__English for 2 months when he(live)__in Germany and(study)__as a journalist.
7,the house (burn) __fast, so we(break)__tthe window to get out. 
8, the servant (drop)__two cups while she(wash up) __last night, neither of them (break) __.
9, he(eat)__three sandwiches while you(talk)__to him. 
10, while he(write)__a letter, the telephone(ring)__;as he(go)__to answer it, he(hear)__a knock on the door; the telephone (still, ring) __while he (walk) __to the door, but just as he(open)__it, it(stop)__.

Ex2. Choose the underlined part among A, B, C or D that needs correcting. 
1, while I did my homework,I had a good idea. 
                   A.        B.                     C.    D
2, don't make so much fusses over the children. 
         A.                                 B.          C.          D
3, John's friends had celebrated a farewell party for
           A.                           B.                      C                       D 
him last Sunday. 
4, she did not   know where most of   the people in the
                A.                                      B
room   are   from. 
      C      D