Rearrange the parts to make a meaningful sentence.

P. started to rain and

Q. I had no umbrella

R. while I was waiting

S. for the bus, it

Explanation

1. 01

   "While" begins a time clause: R "while I was waiting", and "waiting" is followed by "for": S "for the bus,", then the main subject, "it".

2. 02

   P gives "it" its verb, "started to rain", and "and" brings Q.

3. 03

   So the order is RSPQ: "While I was waiting for the bus, it started to rain and I had no umbrella."