Is anything wrong with 'waiting for the bus'?

[Tamara]

English Grammar Error, Intermediate level

ESL/EFL Test #18 "Prepositions and Phrasal Verbs", question 5

I am waiting the bus to arrive any minute providing the timetable is correct.

(a) waiting
(b) arrive
(c) providing

English Grammar Error, Intermediate level

ESL/EFL Test #18 "Prepositions and Phrasal Verbs", answer 5

I am expecting the bus to arrive any minute providing the timetable is correct.

Correct entry: expecting
The error was: (a) waiting

You have found the error but your entry is incorrect.
I am waiting for the bus to arrive any minute providing the timetable is correct.
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Hi

Could you explain, why I can't use 'waiting for' instead of 'waiting' in this sentence?

Is anything wrong with waiting for the bus?

[Alan]

Hi Tamra,

The fact that I have added

[Tamara]

Hi Alan,

Thank you for your answer, now I see the difference between waiting for and expecting. And better understand, why expecting a baby is 'more right'

I only want to point that the test is from Prepositions and Phrasal Verbs group, where waiting for seems to be more natural, whereas 'expecting' is a bit tricky.
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