PAST AFFIRMATIVE
EGP #539 | B2 | MODALITY / must Can use 'must have' + '-ed'. Lexical range: N/A
他的座位空了，他肯定已经走了。
His seat is empty — he ___must ___have already ___left.
地面是湿的，昨晚肯定下过雨了。
The ground is wet — it ___must ___have ___rained last night.
她中文说得很好，她肯定在中国生活过。
She speaks Chinese very well — she ___must ___have ___lived in China.
他没来参加派对，他肯定是忘了。
He didn't come to the party — he ___must ___have ___forgotten.
我找不到钥匙了，肯定放在门边的桌上了。
I can't find my keys — I ___must ___have ___placed them on the table by the door.