Question 1: 10 Drag the missing punctuation into the sentence. T h i s s e m e s t e r , I a m e n r o l l e d i n 5 c o u r s e s : W o r l d H i s t o r y G e o m e t r y C r e a t i v e W r i t i n g B i o l o g y a n d U . S . G o v e r n m e n t .

Missing punctuation:

This semester, I am enrolled in 5 courses : World History, Geometry , Creative Writing, Biology,  and U.S. Government.

Explanation:

Commas were missing after each course, starting from World History until Biology.  These commas are required when listing items or clauses in a sentence.  They show the separation of one item from another.  They are important for the reader to differentiate one item from the rest and for the sentence to be meaningful.  The comma is one of 14 punctuation marks that are commonly used in English grammar.

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