Usage of preposition "On"

[Dinka]

English Language Tests, Intermediate level

ESL/EFL Test #203 "Prepositions of Time and Date (1)", question 1

I wouldn't want his shift -- he has to wake up ......... 3 am everyday.

(a) (none)
(b) on
(c) at

English Language Tests, Intermediate level

ESL/EFL Test #203 "Prepositions of Time and Date (1)", answer 1

I wouldn't want his shift -- he has to wake up at 3 am everyday.

Correct answer: (c) at
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his exams will start on next week. is it correct?

Dinka

[Linda]

Hello,
"On next week" is incorrect. You should say "next week." Generally, there is no preposition that goes before "this, next and last."
For example, "We're going to Thailand next year."
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