Fill in: at, on, or in.1 dad's birthday is 24th august.2 come on! the film starts five minutes.3 sam always goes skiing christmas.4 he wants to do some shopping lunchtime.5 we always stay at home sundays.6 the weather is warm and sunnysummer.7 the streets are usually empty midnight.8 i can't hear a word when the twins speakthe same time.