comprar, ver, ir, tomar (in both meanings to drink and to take), sentarse, oír, escuchar, sentir, estar, ser, etc.
There are many more verbs but those are very used in daily spanish. It's imprtant to remember that all of them should be conjugated for every single subject with a tense, for example:
Tomar in past
Yo tomé un taxi.
Ella tomó un taxi.
Ellos tomaron taxi.
Tomar en futuro (be going to)
(yo)Voy a tomar un taxi.
(ella)va a tomar un taxi.
(ellos) Van a tomar un taxi.