I expect the orange juice ______ undrinkable because it has been put there for several months.

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问题 I expect the orange juice ______ undrinkable because it has been put there for several months.

选项 A、becomes
B、has become
C、became
D、had become

答案B

解析 根据句意,橙汁已经变质,不能喝了,属于过去的动作对现在造成影响,只能用现在完成时,选B。
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