I must get to school before 8 am.

The girl had hardly rung the bell ___ the door was opened suddenly, and out rushed her friend[ ]

Tom never loses heart in face of difficulties,__ ,he always tries his best to overcome them

The child _____ parents were killed in the air crash is now living with his aunt．

have gone to visit him in the hospital had it been at all possible, butI_______ fully occupied the whole of last week.