He knew that Mary (be) the student but he was not sure about it.
was
is
had been
I expected that my friend (help) me with my car.
would help
will help
helped
Granny said that she (loose) her glass.
has lost
had lost
lost
We knew that our friend (be ill) for several days.
was ill
has been ill
is ill
He did not answer the phone because he (sleep).
was sleeping
slept
is sleeping
He said he (come) later.
would come
came
had come