Even the top students in our class can't work out this problem. So it _____ be very difficult.
What do you have lunch? A.in B.on
There a closet and a shelf in my room. A.is B.are
We are rabbits. We a new flat. A.have B.has
I often do my homework Sundays. A.on B.for
Are there apples in the fridge? A.some B.any
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