Question

新概念英语第一册74课之前的不规则动词,改成过去式

Answer 1

am/is-was-been/are-were-been

meet-met-met

see-saw-seen

catch-caught-caught

come-came-come

shut-shut-shut

put-put-put

dust-dust-dust

sweep-swept-swept

empty-emptied-...