He wondered ________ his son was getting along with the experiment.

I thought our friendship was finished        Jenny apologized first and I forgave her right then．

I’ve had such a fun time, reading Harry Potter with my friend, __________we are both sad that it has come to an end.

The police were seeking more information to find out ______ the rich merchant.

My friend showed me round the town, ______ was very kind of him.