1. Correction: "We provided the homeless with clothes and Banh Chung last Têt holiday."
   Explanation: The correct preposition to use with "provided" in this context is "with."

2. Correction: "We were late for school because of the traffic jam."
   Explanation: The correct phrase should be "because of" when indicating the reason for something.

III. Circle the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions:

Answer:

• In sentence 1: The word "by" should be corrected to "with" (the error is with "A").
• In sentence 2: The phrase "because" should be corrected to "because of" (the error is withB