ahead of schedule

提前

agree, agree about, agree on, agree to, agree with, agreeable, agreeably, agreed, agreement, agricultural, agriculturally, agriculture, agriculturist, agronomist, agronomy, aground, ah, aha, ahead, ahead of, ahead of time, ahem, ahoy, AI, aid, aide, aide-de-camp, aide-memoire, AIDS, ail, aileron, ailing, ailment, aim, aim at, aim for, aimless, aimlessly, aimlessness, ain't,