Complete the sentences choosing words from the list

1. I
   [usually|now and then]
   have a sandwich for lunch and a cup of tea without sugar though eating a green salad is much healthier.
2. Nobody is surprised if my brother is off from school because he goes down with an infectious disease ever so
   [regularly|often].
3. My car breaks down
   [usually|from time to time]
   and, even though it doesn't happen often, I am thinking of buying a new one.
4. No epidemic can break out
   [now and then|often]
   because after having recovered from a disease, our body develops immunity to it for some time ahead.
5. Roses in our garden come out
   [regularly|from time to time]
   in early July as if the flowers know that this is the month of my birthday.