1. I've never ridden a tandem bicycle before.

2. We could rent a tandem bicycle. It's not expensive at all.

3. At last he had to ride the tandem bicycle with me.

4. Panting and sweating, two men on a tandem bicycle finally made it to the top of a steep hill.

5. The couple had been home for Christmas but left for Egypt on New Year's Day to resume a honeymoon that had begun with a tandem bicycle ride across Europe to Istanbul.

6. The results indicated that the social-economic background of users who chose single bicycle and tandem bicycle are significantly different.