They were walking along the shore _______ a huge wave appeared out of nowhere, sweeping them out to sea.

 I'll make some sandwiches, just ________ we get hungry later.

It is nice to hear from a close friend. ______, we last met more than thirty years ago.

Frank insisted that he was not asleep______ I had great difficulty in waking him up.

—— You finally made it , didn’t you ? ——Yes ,          your help , I would have not succeeded.