单选题

1. There_____ a bird in the tree.
A. am
B. is
C. are
2. There_____ two boys under the tree.
A. am
B. is
C. are
3. There_____a teacher and many students in the classroom.
A. am
B. is
C. are
4. There_____ two dogs and a cat under the tree.
A. am
B. is
C. are
5. There_____ some apples in the tree.
A. am
B. is
C. are

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