Is this the factory ________ he worked ten years ago?

Alice received an invitation from her boss，________ came as a surprise.

I have bought two ballpens，________ writes well.

Is there anyone in your class ________ family is in the country?

The engineer ________ my father works is about 50 years old.

They arrived at a farmhouse，in front of ________ sat a small boy.

The pen ________ he is writing is mine.

—I wonder how much you charge for your services.
—The first two are free ________ the third costs $30.

Try to read stories in English and speak in English whenever you can，________ you will see more progress over time.

Stand over there ________ you'll be able to see the oil painting better.