first thing today morning vs. first thing tomorrow morning

[Islam]

English Language Tests, Intermediate level

ESL/EFL Test #250 "Today, yesterday and tomorrow (1)", question 5

My boss wants me to finish the project first thing ......... morning.

(a) today
(b) yesterday
(c) tomorrow

English Language Tests, Intermediate level

ESL/EFL Test #250 "Today, yesterday and tomorrow (1)", answer 5

My boss wants me to finish the project first thing tomorrow morning.

Correct answer: (c) tomorrow

Your answer was: incorrect
My boss wants me to finish the project first thing today morning.
_________________________

why, Please explain.
Thank's
Islam

[Lost_Soul]

Hi,

You can say either "this morning" or "tomorrow morning".
"Today morning" is wrong.

[Englishholic]

Hi,

Couldn't we substitute "...first thing in the morning" for "...first thing tomorrow morning"?

Thanks,

Englishholic

[Yankee]

.
Yes, that's also possible, Englishholic.
.