be+(always,often等等表示频繁发生的副词)+doing 表示经常性发生的事情
A storm is often being followed by a calm
按字面翻译的话就是:平静总是跟在暴风雨之后
15. A storm __________by a calm.
15. A storm __________by a calm.
A. is often being followed B. was often followed
C. is often followed D. has often been followed
这题为什么选择A?
A. is often being followed B. was often followed
C. is often followed D. has often been followed
这题为什么选择A?
英语人气：272 ℃时间：2020-06-13 21:31:11
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