During the early days of education in the U.K., few formal schools existed, and the ones that do were costly and, therefore, reserved for children of the wealthy.
Afew formal schools existed
Bthe ones that do正確答案
Cwere costly
Dreserved
答案與詳解
為什麼答案是 B
the ones that do 的 do 與前文過去式 existed 不一致，應改為 did，使時態一致。
載入中…
