What do I enter if box 1b and 1e are mssing on my 1099-B?

[KiaraE]

Here is the advice from the TurboTax help content for when the date acquired is blank on your Form 1099-B:

When it comes to the date acquired, your 1099-B can still be useful (even though it left this area blank). As long as each sale was listed as either short-term or long-term, you can type in the word "Various" in the box for date acquired. 

Please refer to the link below for the information on the stock's cost basis.

https://ttlc.intuit.com/replies/3300454