Had to be corrected
has the contract been typed yet?
are being designed
has been already opened
was opened
were made
was knitted
was saw/ hasn' t been found
must be handed in
will be cleaned
Must для повествовального mustnt для отрицательного смотря что тебе нужно, оба варианта правельные
Да, конечно, мы тоже учили их в 6 классе. Поверь, если ты их сейчас не выучишь, потом будут огромные проблемы.
A) has been
b) have never run
c) have cut
d) has never swum
e) haven't done
f) have won
g) have seen
h) hasn't written