when
- It is only when you get close to the National Entrance Exam _______fully realize how much time you have wasted.
- It is well known to all that water, ______ enough, can change into ice quickly.
- It was from May
- It was last year _____ I visited the museum _____ you had visited.
- It was the first time ______ I ______ here.
- It was the first time ________ I ________ face to face with a thunder storm.
- It’s only when you lost something __how much you value it.
- It’s the fifth time ______ late this term.
- Look out when crossing the road, _____ you may be hit by a car.
- Oh, when was ___ exactly? — It was in