17a) I went to their house for dinner. (Correct)
17b) I went to there house for dinner. (Incorrect - should be "their")
17c) I went to they’re house for dinner. (Incorrect - should be "their")
18a) It’s too bad that you won’t be able to
come to the party. (Correct)
18b) Its too bad that you won’t be able to come to the party. (Incorrect - should be "It's")
19a) She told Anne, “Your my best friend!” (Incorrect - should be "You're")
19b) She told Anne, “You’re my best friend!” (Correct)
20a) The effects of the storm were disastrous. (Correct)
20b) The affects of the storm were disastrous. (Incorrect - should be "effects")
21a) Billy went for a run, and than he took a shower. (Incorrect - should be "then")
21b) Billy went for a run, and then he took a shower. (Correct)
22a) Who’s book is this? (Incorrect - should be "Whose")
22b) Whose book is this? (Correct)
23a) Her temper tantrum affected everyone around her. (Correct)
23b) Her temper tantrum effected everyone around her. (Incorrect - should be "affected")
24a) I like chocolate ice cream more than vanilla. (Correct)
24b) I like chocolate ice cream more then vanilla. (Incorrect - should be "than")



