everyday vs every day

[English Learner]

English Grammar Tests, Elementary Level

ESL/EFL Test #180 "Basic Grammar Exercises (1)", question 6

I ......... to bed at 10 pm everyday.

(a) does
(b) goes
(c) go
(d) to go

English Grammar Tests, Elementary Level

ESL/EFL Test #180 "Basic Grammar Exercises (1)", answer 6

I go to bed at 10 pm everyday.

Correct answer: (c) go
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stupid

[Beeesneees]

Thanks! You've pointed out an error in that test! Everyday should be every day. How helpful!
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Cheers m' dears!

[Mister Micawber]

And I fixed it. Thanks, Learner.
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Native English teacher at Mister Micawber's

[Beeesneees]

Beat me to it - I didn't have time earlier. Thanks, MM.
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Cheers m' dears!