Puzzle-Time 29

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Across
  1. 1. A Muslim temple.
  2. 5. What goes up and down in the subway?
  3. 6. It's scary and can go through walls.
  4. 7. Like a butterfly, but flies at night.
Down
  1. 1. A yummy cake beginning with 'M'.
  2. 2. Where is the water warm - even in winter?
  3. 3. Drinks stay hot in this.
  4. 4. It's a taxi, a train, a plane....So what is it? T_________