3. I admire my teacher. I love my teacher.
These may be combined into single sentences, as follows:—
1. The boy is good and clever.
2. William and John are going to school.
3. I admire and love my teacher.
Note the use of the comma when more than two words or sets of words are joined by and:—
I met Fred, Will and George.
Faith, Hope and Charity are sometimes called the Christian Graces.
I bought a pound of tea, two pounds of coffee, ten pounds of sugar and a peck of flour.
The comma is used in the same way with or.