You should join your sentences visually by starting one sentence on your paper (or computer) right after the last sentence. On a computer, you should not press "return" or "enter" at the end of a line. When your paragraph will be printed (especially for your teacher to give you feedback), you should be careful to format the paragraph according ot the directions your teacher gives you.
Here are some common Formatting directions you may need to know about:
—Use 12 point font.
—Use 1 inch margins (2.54 cm).
—Double-space the paragraph.
—Make the paragraph left-aligned.
—Indent the first line of the paragraph.