Someone is ringing the doorbell. Go and see ____.

fraid that Mrs Black doesn’t believe her son isable to design such a complicated machine,

Neither Jim’s cousins nor he himself ____toAmerica , but _____ of the know the country very well.

They speak perfect English. How long have they learnt it— ______ they were seven years old.

Whether you believe it or not, it was________ caused the serious accident.