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Key to Pre-unit Test 1
Lesson1、A private conversation—Word order in simple statements
Lesson2、Breakfast of lunch?—The present,simple and continuous
Lesson3、Please send me a card—The simple past
Lesson4、An exciting trip—The simple past and the present perfect
Lesson5、No wrong numbers—The indefinite and definite articles
Lesson6、Percy Buttons—The indefinite and definite articles
Lesson7、Too late—The past continuous
Lesson8、The best and the worst—The comparison of adjectives
Lesson9、A cold welcome—Prepositions of time
Lesson10、Not for jazz—The passive
Lesson11、One good turn deserves another—Review of tenses
Lesson12、Goodbye and good luck—The simple future
Lesson13、The Greenwood Boys—The future continuous
Lesson14、Do you speak English？—The past perfect
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Key to Pre-unit Test 2
Key to Pre-unit Test 3
Key to Pre-unit Test 4
Structural index
Lexical index
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