At the party，John made up a joke，________ people burst out laughing.

A．on which B．by which C．at which D．from which

Can you lend me the book ________ the other day?

A．about which you talked B．which you talked

C．about that you talked D．that you talked

The pen ________ he is writing is mine.

A．with which B．in which

C．on which D．by which

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

A．whom B．who C．which D．that

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

A．to whom B．on whom

C．with which D．with whom

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

A．who B．who's C．which D．whose

Is ________ some German friends visited last week?

A．this school B．this the school

C．this school one D．this school where

I have bought two ballpens，________ writes well.

A．none of them B．neither of them

C．neither of which D．none of which

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

A．it B．that C．which D．he

Is this the factory ________ he worked ten years ago?

A．that B．where C．which D．the one