Identify the infinitive.
The air in Nam was always hard to breathe; it was heavier and thicker than the air back home.
A. in Nam
B. to breathe
C. heavier and thicker
D. back home

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Grammar › Viewa quality of voice characterized by a thickness of sound or by a muffled or rasping sound
A. homeless
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Choose the correct verb tense for the following sentence:
My students __________ a new chapter book next week.
_
A. reading
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_
A. watch / usually
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Choose the correct form of the verb: She _ to the library every Saturday.
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