It is the third time that she has won the race, ______ has surprised us all.

It is far better for one to drink milk，________one gets nutrients, than to drink coffee，________contains no nutrients at all.

It’s helpful to put children in a situation _____ they can see themselves differently.

The old professor has three sons，________are doctors.

Wind power is an ancient source of energy ____we may return in the near future.

In today’s competitive economy, ________ everyone is trying to do more with less, you’ve got to figure out a way to profit from the very beginning.

The moment ______Leo will never forget is ______he joined the Air Force

After a pause for a drink, I took up my story just _______ I had left off.

On the other side of the street stand more than 180 houses, _______are in poor condition now．

The position ________ he wants to apply is very important for the development of the firm.