句型转换。

1. Provided that circumstances permit, we shall hold the meeting next week.

    ____ ____ ____ circumstances permit, we shall hold the meeting next week.

2. If you work hard, you are sure to pass the exam.

    If you work hard, you ____ ____ ____ pass the exam.

3. Custom officers are making spot check on incoming cars.

    Custom officers are ____ ____ spot check on incoming cars.

4. The 4:26 train has been cancelled because of an accident.

    The 4:26 train has been cancelled ____ ____ ____ ____ an accident.

5. My friend that I mentioned last night is 2 years younger than you.

    My friend that I mentioned last night is 2 years ____ to you.

6. He seems unable to kick off his bad habits.

    He seems unable to ____ ____ his bad habits.