Don't know why we couldn't have gone swimming this afternoon. Is it grammatically correct sentence?

Will give branliest and 25 points if answer all quesyions 1. select the correct prefix for the following base word: freeze (against freezing). a. im- b. inter- c. re- d. mis- e. anti- 2. select the correct prefix for the following base word: lock (lock between). a. im- b. inter- c. re- d. mis- e. anti- 3. select the correct prefix for the following base word: behave (behave badly). a. im- b. inter- c. re- d. mis- e. anti- 4. select the correct prefix for the following base word: mature (not mature). a. im- b. inter- c. re- d. mis- e. anti- 5.. select the correct prefix for the following base word: play (play again). a. im- b. inter- c. re- d. mis- e. anti-