I have no idea whether he has sisters, and if he does, _____？[ ]

Could you take a message for Mr Brown — Certainly. I ________ him about somethingelse in any case. So it _______ any bother.

Cars do cause us some health problems—in fact far more serious ________ than mobile phones do.

The great writer has written many stories for children. It is saidthat a new one will ______ at the end of this month.

Many city people their bikes to work every day.