Exercise 4: Find and correct a mistake in each sentence. 1. I think that (A) solar energy can be an alternatively (B) source of (C) energy in the near (D) future. 2. I try to spend (A) some time (B) with my children although being (C) very busy (D). 3. Day of the Dead is a superstition (A) festival to remember (B) people who (C) have passed away (D). 4. In the future, the wind and (A) the sun will use (B) as the most (C) important energy sources (D). 5. The (A) black car is (B) mine (C). Her (D) in the garage.