How to use "there"

The sentence is ok without there.

The 2nd one is ok. I suggest small change: The restaurant was so crowded that Mike had to wait for an hour to go in(side).

Thank you for answering my question.

Another one occurs to me : The restaurant was so crowded that Mike waited for an hour to go inside it .

Is this OK?

Can "it" be used , instead of "there" ?

Or it also should be deleted ?

TT

Hi

'It' is not necessary: The previous sentence makes the place amply clear.

Let me show you this example :

This stone is too heavy for me to lift.

= This stone is so heavy that I can not lift it .

In this sentence "it" should be used without fail.

The principle , ' The previous makes the object amply clear ' , doesn't apply to this case ?

TT

Hi

Yes, I would also use 'it' but I don't know whether it is compulsory here.

I being a non-native have learnt that most of my constructions are wordy. With the help of the corrections made by veterans and natives I have understood that.

Now again I think a native speaker will be able to give us a correct idea.

Let us wait.

TasmanTigerdoesn't apply to this case ?

No, it doesn't apply in the case of lifting because "this stone" is a direct object, and you need a direct object after "lift". "it" stands for "this stone". The phrasal verb "go in", like its non-phrasal synonym "enter", doesn't require a direct object.

You can't say "He lifted", but you can say "He went in"

Thank you very much, CalifJim.

Could you give me some more sentence examples ?