2. 外语
  3. Our principal, a mean old lady, ______ a travel for ages, but to our great disappointment nothing has happened yet.

Our principal, a mean old lady, ______ a travel for ages, but to our great disappointment nothing has happened yet.

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问题 Our principal, a mean old lady, ______ a travel for ages, but to our great disappointment nothing has happened yet.
选项 A、was premising
B、has been premising
C、has premised
D、promised
答案B
解析 动词时态题。这句话考查现在完成进行时。后面的分句用的是进行时，所以一致起见后面不能用过去时，排除选项D ，选项A 不合适，这里不能用过去时，因为与后半句的现在时不一致；从后一分句看出承诺到目前仍然没有兑现，如果不用完成进行时表“一直承诺”，则一定要用过去完成时，所以选项C 也不合适，正确答案为B 。
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