=Exercise 106=
Change the italicized verbs to past tense, future, present perfect, past
perfect, future perfect. Wherever necessary, add sufficient to make the
meaning of the tense clear; as,
_Present_: The manager _is now_ in his office.
_Past_: The manager _was_ in his office _a few minutes
ago_.
_Future_: The manager _will be_ in his office
_to-morrow at ten o'clock_.
_Present Perfect_: The manager _has been_ in his
office _all the morning_. (It is still morning.)
_Past Perfect_: The manager _had been_ in his office
_only a few moments when the president arrived_.
_Future Perfect_: _In about five minutes_ the manager
_will have been_ in the president's office _exactly
three hours_.