1
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From this reading 1.
2
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From this reading 2.
a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of
From this reading IN SCHOOL I. BRINGING THE FRESH AIR IN.
breatheverbUS /briːð/
draw air into, and expel out of, the lungs
From this reading Why must the air we breathe have oxygen in it?
the act of delivering or distributing something (as goods or mail)
From this reading IN SCHOOL I. BRINGING THE FRESH AIR IN.
showing who or what does the action
From this reading What do we mean by fresh air?
used to form questions and negatives, and to give emphasis
From this reading What do we mean by fresh air?
recently made, produced, or harvested
From this reading IN SCHOOL I. BRINGING THE FRESH AIR IN.
haveauxiliary verbUS /hæv/
used with a past participle to form the perfect tenses
From this reading Why must the air we breathe have oxygen in it?
the person speaking or writing, as the subject of the verb
From this reading IN SCHOOL I. BRINGING THE FRESH AIR IN.
inside something, or within a place, period, or state
From this reading IN SCHOOL I. BRINGING THE FRESH AIR IN.
a thing, animal, or idea already mentioned
From this reading Why must the air we breathe have oxygen in it?
mean or intend to express or convey
From this reading What do we mean by fresh air?
used to say something is necessary, or almost certainly true
From this reading Why must the air we breathe have oxygen in it?
oxygennounUS /ˈɑːksədʒən/
a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust
From this reading Why must the air we breathe have oxygen in it?
an educational institution
From this reading IN SCHOOL I. BRINGING THE FRESH AIR IN.
used before a noun that is already known, already mentioned, or the only one of its kind
From this reading IN SCHOOL I. BRINGING THE FRESH AIR IN.
the speaker together with one or more other people
From this reading What do we mean by fresh air?
used to ask for information about something
From this reading What do we mean by fresh air?
the cause or intention underlying an action or situation, especially in the phrase “the whys and wherefores”
From this reading Why must the air we breathe have oxygen in it?