Find mistakes and correct them. 1) By 8 o’clock everyone left. 2) Ann didn’t travelled by plane before that day. 3) The
professor had finished his lecture at 12 o’clock. 4) I have just woken up when somebody knocked at
the door. 5) We had just finished supper when Mike had phoned. 6) How many books did you read
by the end of last month? 7) Jane saw the picture and had understood how beautiful it was. 8) Little
Polly had never seen snow before she had come to Iceland. 9) Den finished his work before his boss
returned. 10) We had gone to bed after the TV programme had ended.
