The car is environmentally friendly because it uses electricity instead of gas. _____, it is less expensive.

---How was your driving test going?---Not very well at first, but after many attempts I ____ passed it.

Mr. Lin’s comments were very difficult to follow because they were ______related to the topic under discussion.

When Helen saw her tutor nod _______ to her, she calmed down and went on with her performance．

“John” and“Tom” are _______ names in the English-speaking countries.