She won’t come over for a visit unless________.
She would say she was kept very busy, ____ she meant to refuse his invitation to dinner.
Several new railways are under _____ in China .
The traffic is heavy these days . I _____ arrive a bit late , so could you save me a place?
John is fond ____ football, while his brother is crazy ____ music.
–Ann is in hospital. ---Oh, really? I _____ know ,I ____ go and visit her.