3
各文の( )に当てはまるものとして適切な語句を選び, 記号で答えなさい。
(1)(Among the first plants to grow on the land regions of the Earth (
which in prehistoric times grew to immense size.
(青山学院大)
イ. horsetail rushes
エ, and horsetail rushes
ア. were horsetail rushes
ウ. horsetail rushes were