I have bought the same trousers _________ he is wearing.

I can never forget the days _____ we worked together　and the days ______ we spent happily together.

He is the man _________ you can turn when you are in trouble.

There was a time __________ the people in my village lived a peaceful life, enjoying the beauty of nature.

The old town has narrow streets and small houses ______ are built close to each other.

The prize will go to the writer ______ story shows the most imagination.

There is hardly an environment on earth ______ some species of animal or other have not adapted successfully.

The company was willing to provide us with what we needed, _____ made us excited.

The book was written in 1946, _____ the education system has witnessed great changes.

He is the very lecturer,        experience impressed us greatly at the conference yesterday.