Grammar: Third conditional

Vocabulary

-Make a crossword with the words used in the exercise

UNIT 11: Inventions

-Answer the questions.
-Write a paragraph.
-Send an audio file reading the paragraph

Last activity! I want to thank you all for the effort and reponsability, take care of yourself!! see you on April 20th.

Choose the best word to complete the sentence.

1.	Nadia was a ____ to the crime. She saw everything that happened.
	A)	myth
	B)	hoax
	C)	witness

2.	To date, there is no scientific ____ that proves there is life on Neptune.
	A)	evidence
	B)	phenomenon
	C)	alien

3.	I know for a fact that you ate the last piece of cake. The ____ is the chocolate on your shirt!
	A)	mystery
	B)	proof
	C)	trick photo

4.	Rosa is positive that she saw a ____, but I think there are other explanations for what she saw.
	A)	ghost
	B)	prediction
	C)	theory

5.	The UFO sighting turned out to be ____. What we saw was actually two teenage boys playing a trick on their friends.
	A)	a witness
	B)	an explanation
	C)	a hoax

6.	Did you believe Tyler's ____ for why he was late?
	A)	explanation
	B)	trick photo
	C)	urban legend

7.	The weather forecaster's ____ for a sunny day today was wrong. It's cloudy.
	A)	equipment
	B)	prediction
	C)	sighting

8.	Peter feels very ____ about his promotion. His boss hasn't been happy with his work lately.
	A)	certain
	B)	positive
	C)	uncertain

Grammar

Use the following to answer questions 9-14:

Choose the correct phrase to complete the sentence.

9.	I didn't see who was at the door. It ____ Will, but maybe it was Erica.
	A)	must have been
	B)	could have been

10.	You ____ Danielle at the movies because she's been in Paris since Tuesday.
	A)	couldn't have seen
	B)	might have seen

11.	Steven ____ this note for us this afternoon because I'm sure it wasn't here this morning.
	A)	must have left
	B)	may have left

12.	Melissa ____ the chocolate cake. She loves chocolate.
	A)	couldn't have eaten
	B)	could have eaten

13.	The police say that Alex is an important witness. He ____ the crime.
	A)	must have seen
	B)	might have seen

14.	John ____ in the car with his wife, but the woman looked more like his sister.
	A)	may have been
	B)	must have been

Use the following to answer questions 15-20:

Rewrite the underlined sentence using might have, must have, or couldn't have.

15.	I guess it was a movie prop. I'm really not sure. ______________________________________________________________________

16.	I'm sure it was my sister on the phone. I know her voice very well. ______________________________________________________________________

17.	It's not possible that you saw Collin's car. His is red, and that one was brown. ______________________________________________________________________

18.	The plane landed on time. I'm positive because I saw it. ______________________________________________________________________

19.	It's not possible that Isabelle opened the door. She didn't have a key. ______________________________________________________________________

20.	It's possible that the sculpture in front of the museum was made by an Italian artist. I really am not sure. ______________________________________________________________________

-find a news article about a mysterie
-Read the article.
-Write a paragraph about your theories about that mysterie