一般现在时与一般过去时的被动语态 — 英语选择题
题目
选择正确的一项完成句子:At Green Hill School, used cans ___ to a recycling center every month. Last Friday, 240 cans ___ there by the students.
A. are taken; were taken
B. were taken; are taken
C. are taken; are taken
D. were taken; were taken