A.caught on | B.worked up | C.took up | D.picked up |
A.take up | B.get on | C.pick up | D.turn on |
A.give up | B.catch up | C.keep up | D.pick up |
A.picked up | B.pick up | C.picks up | D.picking up |
A.picked out | B.picked up | C.gave up | D.gave out |
A.or else | B.as to | C.so as to | D.up to |
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