______side of the street is lied with different shops, ______of which sell electronic products.

They were all very tired, but ______stopped to have a rest.

---Is there ___ you don't understand?---I think ___ is quite clear.Thank you.

It was hard for him to learn English in a family, in which _____ of the parents spoke the language.

When he took his gloves off ,  I noticed that       one had his name written inside.