prep.介系詞正在做What are you up to?
prep.介系詞取決於It's up to you to decide.
prep.介系詞有能力Are you up to the challenge?
prep.介系詞直到We can stay up to midnight
adj.形容詞能夠Are you up to walking that far?
adv.副詞高達The price is up to $100
prep.介系詞高達The store offers discounts of up to 50%.
adj.形容詞達到標準The work wasn't up to standard.
prep.介系詞包括The sale is up to 50% off.
adj.形容詞達到The work wasn't up to her usual standard.
adj.形容詞達到The work wasn't up to his usual standard.
adj.形容詞直到今天We need to bring our records up to date.
prep.介系詞圖謀I suspect he's up to something.