Question

"...they were inexplicably becoming bigger" is in the

(A) simple past.
(B simple present.
(C) past continuous
(D) present continuous

Answer 1

O verbo está no (C) Past Continuous.

O conjunto verbal desta frase é "were becoming", onde o verbo auxiliar "to be" está no passado, na forma "was/were". O verbo principal "become" tem-lhe acrescentado o sufixo "-ing", sendo Continuous. Daí a frase estar no Past Continuous.