His parents worried that extracurricular activities were holding him_from further progress in his study .
A back B off C in D on
His parents worried that extracurricular activities were holding him_from further progress in his study .
A back B off C in D on
[单选题][A] upon [B] back [C] off [D] away
A answer back B keep your back C watch your back D look backJustasthelettersays,
[单选题]/[A/] for/[B/] up/[C/] off/[D/] on
[单选题][A] up [B] off [C] down [D] on
[单选题]A. onB. outC. overD. off
[单选题]_________[A] off [B] behind [C] over [D] along
[单选题][A] use [B] turn [C] give [D] back
[单选题][A] onto [B] against [C] off [D] along
[单选题][A] over [B] out [C] off [D] away
A . between B . among C . from D . offItiseasytodistinguish()hertwinsisterandher