(verb: to think / to believe)
I think that buying things online is cheaper. 
Ich denke, es ist günstiger, Dinge online zu kaufen. 
Tôi nghĩ mua đồ trực tuyến sẽ rẻ hơn. Tôi nghĩ mua đồ trực_tuyến sẽ rẻ hơn . I | think | buy | thing | online | will | cheap | more.