Whats the main tourist attraction in la habana

El estudiante leía una novela de terror cuando, de repente, alguien _ a su puerta a. llamé b. llamó c. llamando d. llamaba

Igot hw for spanish and i dont understand it can somebody mee?

Instructions: for this assignment you will write sentences using the -go verbs in the present tense.you may write a: at least five of the “-go” verbs (poner, salir, tener, venir, decir, oír, traer, and hacer) and the weather expressions. write at least 10 complete sentences. do not forget to include a title.