Driving theory revision UK. (CAR)?

I'm due to take my driving theory test on Tuesday (Nervous yes) I'm constantly doing mock tests on te official DVSA app on my IPhone. On the practice questions, there's over 1000 question which I'm not able to do in that time. Will taking mock tests be enough for me to pass? I have done 20 mock tests and have passed them all. Will it be enough?

The theory test is mostly common sense, the only questions you really need to revise are those involving distances, speeds etc.

I wish it was a theory