Rearrange the parts to make a meaningful sentence.

P. every night and

Q. the watchman locks

R. opens it at six

S. the gate at ten

Explanation

1. 01

   Q has the subject and the verb. Locks what, and when? S.

2. 02

   P says how often and brings "and", and R adds the second action.

3. 03

   So the order is QSPR: "The watchman locks the gate at ten every night and opens it at six."