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One more week,______we will leave school and have a holiday.

It was announced that only when the terrible disease was under control _____ to return to their homes.

When asked to explain _____ he did to make his students so fascinated with his lessons, the teacher paused and thought deeply.

There is no doubt _______ international cooperation is the key to _______ with cyber crime.

In this company, it is required that anyone who ______ recently come here _____ this kind of test.

―What’s Apple’s attitude toward the matter?
―Apple does not look into the matter directly, ______.

_____ suddenly occurred to me _____ I had to attend an important meeting in Shanghai the next day.

As a rough estimate, Nigeria is _______ Great Britain.

Once          a difficult and even dangerous place , Vietnam is now a friendly detestation that welcomes visitors from all over the world        .