Betty is inChina___ her mum and dad.
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A group ___ boys and girls are dancing and singing in the park.
A. with
B. of
C. for
— What ___ the food on the plate?— It seems delicious.
A. in
B. with
C. about
— Show me the letter, please.— Which one? The one ___ your sister.
A. in
B. with
C. from
Look! The boys ___ happily in the river.
A. swim
B. swam
C. are swimming