1.Change the verbs in bracket to the Past Continuous to show that two actions are happening at the same time and for the same length of time.
1) I__on the grass relaxing while the band __classical music. (lie) (play)
2) It was a cold day. The wind __ hard and the rain __heavily.(blow) (fall)
3) John __ in the sea while the children __ on the beach. (swim) (play)
4) We __ the plans while our boss __ about the project. (draw) (talk)
5) While John __ the presentation, nobody __ (give) (listen)

2.In the sentences below, something or someone interrupted the action. Insert the correct form of the verbs (shown in brackets at the end of each sentence) into the spaces.
1) A groupof friends __ dinner in an old house in the country when suddenly there __ a noise and the door __ slowly. (have) (be) (open)
2) John __ in his office reading the newspaper when he __ the sound of a car crash in the street. (sit) (hear)
3) Mary __ home late one night when a strange man __ her and __ for a cigarette.(walk) (stop) (ask)
4) Policeman Plod __ home one morning when his wife __ to him from the door. "You`ve forgotten your umbrella!" she said. (leave) (call)
5) We __along a country road when suddenly a fox __ out in front of the car and __ at us. (drive) (jump) (look)
6) While I __ my English grammar lessons, my roommate __in and __ he wanted to watch the television. (study) (come) (say)