Peter has changed a lot, hasn’t he?—Yes. He used to theguitar, but now he is more inplaying soccer.

When my parents were young, they had to ________ several miles every day to school since they had no money to buy a bike.[ ]

Scientists still wonder ______ cloning will help or harm us and _____ it is leading us.

You should ________ these bad habits. [ ]

Could I speak to _______ is in charge ofInternational Sales please