+0
Are the following sententences correct? And do they mean the same?

1. I was not able to access the Internet the last few days. (Do I need to put a preposition?)

2. I was not able to access the Internet In the last few days.

3. I was not able to access the Internet for the last few days.

4- I was not able to acces the internet during the last few days.

Note that I am able to access the internet now.
+1

Hi

(1) is casual and it's OK

To be more formal, you'd probably put 'for' in, as you have with (3)

(2) and (4), I'd say, are not wrong either

Dave