These are all firsts.的相關(guān)資料：
臨近單詞
these days
these
These dungarees have been prewashed.
These activities co-ordinate well.
These rosebuds haven't fully opened.
These are extremely dangerous signs.
These are all groundless statements.
these flowers need watering everday.
These calculator make good presents.
These animals are highly gregarious.
These records afford no explanation.
These alloys weldat different heats.
