PAST, NEGATIVE
EGP #549 | C2 | MODALITY / must Can use 'must not have been' (especially with 'easy'). Lexical range: N/A
一个人拉扯四个孩子，想必很不容易。
It ___must ___not ___have ___been easy raising four children alone.
她没来参加聚会，想必当时身体不舒服。
She ___mustn't ___have ___been feeling well, or she would have come.
谈判想必进行得不顺利。
The negotiations ___must ___not ___have ___been going well.
票想必不够大家分的。
There ___mustn't ___have ___been enough tickets for everyone.
漏洞百出，他的说法想必不准确。
His story ___must ___not ___have ___been accurate, given all the contradictions.