1.I (call)..........was calling........... Mr.Wilson at 9:00 last night,but he (not be).........wasn't.......... at home.He (study)..........studied........... at the libary
2.I (not/ hear)......didn't hear........... the thunder during the storm last night becasue I (sleep).........was sleeping...............
3.It was beautiful yesterday when we went for a walk in the park. The sun (shine)..........shined..............he birds (sing).......sang.................
4.My bother and my sister( talk)...........were talking............. about something when I (walk)........walked..........into the room
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