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Without proper lessons, you could ____ a lot of bad habits when playing the piano.

A. give up     B. catch up    C. keep up      D. pick up

Without proper lessons, you could ____ a lot of bad habits when playing the piano.

A. give up                       B. catch up                    C. keep up                      D. pick up

Without proper lessons, you could ____ a lot of bad habits when playing the piano.

A. give up                 B. catch up                C. keep up                 D. pick up

Without proper lessons, you could _______ a lot of bad habits when playing the piano.

Without proper lessons, you could _______ a lot of bad habits when playing the piano.

A．give up           B．catch up          C．pick up           D．keep up