Commas and Independent Clauses

One of the sentences in each item may be missing a comma to separate independent clauses or may contain an unnecessary comma. Remember that a comma is not needed between verbs when a single subject performs two actions. Select the answer option that eliminates the error or, if the original sentence is correct, select No change.

At night, people in early civilizations could measure time by the flow of sand or water but could not use a sundial.

• Put a comma between time and by.

• Put a comma between water and but.

• No change

Tags

CCSS.L.4.2C

CCSS.L.6.2A

One of the sentences in each item may be missing a comma to separate independent clauses or may contain an unnecessary comma. Remember that a comma is not needed between verbs when a single subject performs two actions. Select the answer option that eliminates the error or, if the original sentence is correct, select No change.

In the twelve-hour system, does 12:00 A.M. mean that it is noon, or that it is midnight?

• Remove the comma after noon.

• Remove the comma after system.

• No Change

Tags

CCSS.L.4.2C

CCSS.L.6.2A

One of the sentences in each item may be missing a comma to separate independent clauses or may contain an unnecessary comma. Remember that a comma is not needed between verbs when a single subject performs two actions. Select the answer option that eliminates the error or, if the original sentence is correct, select No change.

In military time, 7:15 A.M. becomes 0715 so what does 7:15 P.M. become?

• Put a comma after 0715.

• Remove the comma after time.

• No Change

Tags

CCSS.L.4.2C

CCSS.L.6.2A

One of the sentences in each item may be missing a comma to separate independent clauses or may contain an unnecessary comma. Remember that a comma is not needed between verbs when a single subject performs two actions. Select the answer option that eliminates the error or, if the original sentence is correct, select No change.

Mechanical clocks first appeared in China around the twelfth century but did not show up in Europe until the fourteenth century.

• Put a comma between century and but.

• Put a comma between China and around.

• No Change

Tags

CCSS.L.4.2C

CCSS.L.6.2A

One of the sentences in each item may be missing a comma to separate independent clauses or may contain an unnecessary comma. Remember that a comma is not needed between verbs when a single subject performs two actions. Select the answer option that eliminates the error or, if the original sentence is correct, select No change.

Do you use a watch or cellphone to find out the time or do you rely on clocks wherever you go?

• Put a comma between time and or.

• Put a comma between clocks and wherever.

• No Change

Tags

CCSS.L.4.2C

CCSS.L.6.2A