Question

There were already five in the car, but they managed to take me as well.__ It ( ) a comfortable jou

—There were already five in the car, but they managed to take me as well.—It ( ) a comfortable journey. couldn't have been这个答案是错的吧

Answer 1

—There
were
already
five
in
the
car,
but
they
managed
to
take
me
as
well.—It
(
)
a
comfortable
journey.
couldn't
have
been这个答案是对的。意思是“一定不/不可能”，本来要用mustn‘t
have
been，但must不能用于否定句和疑问句。若在否定句和疑问句中要用can/could
代替must。
eg：
It
must
be
him.
一定是他。
It
can’t
be
him。不可能是他。
He
must
have
arrived
very
early.
他一定到得很早。
He
couldn‘t
have
arrived
very
early.
他不可能到得很早。