题目
Actions __________ to protect the environment since last week.
A.
have taken
B.
were taken
C.
have been taken
D.
will be taken
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Actions __________ to protect the environment since last week.
have taken
were taken
have been taken
will be taken
答案与解析
自由组卷
围绕这道题再组一份练习 →
完整试卷
浏览同年级试卷结构 →