Choose the best answer A, B, C or D to complete sentences.
Belinda missed a few months of school because of illness and found it difficult to keep.......... with her classmates.
A.off
B.up
C.in
D.of
Belinda missed a few months of school because of illness and found it difficult to keep.......... with her classmates.
A.off
B.up
C.in
D.of
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