CoinMarketCap has supported several airdrops: LUNA, KAVA, BAND, HNT, OXT, GRT, CYBER, FOL, TKO, IOTX, SUSHI, POLS, FOC, MBOX, REVV and many more.
Actually there are SAND / The Sandbox, CRU / Crust Network and NFTB / NFTb.

The principle is always the same: Watch some videos (though in general not all questions can be answered with information from the videos) - take the quiz - wait till the campaign ends and get the rewards to your binance spot wallet, the mainnet adress of the promoted token or your BSC BEP20 adress afterwards.

What you need:
x) a binance account and your Binance User ID (how to find it)
Important: You have to have completed the KYC-verification before rewards can be sent.
x) an account of coinmarketcap (only email adress required)
x) a Crust Main Chain Address: Therefore download the browser extension (only for chrome-like Browsers like BRAVE), create a wallet and copy your wallet address.  (Please note that Crust Wallet does NOT support CRU tokens of ERC20. It is used to interact with Networks including Maxwell and MainNet.)

If, contrary to expectations, you have not yet registered for Binance, please consider registering with my referral link, where you and I will each receive 10% of your transaction fees: Binance Registration with 10% reduced transaction fees

Unlike other earn programs you are allowed to take the quiz only once - in total, per Binance account and per coinmarketcap account. So please be careful while filling out the questions.

Here are the lessons and the link to the quiz: https://coinmarketcap.com/earn/project/crust-network 
Successful users will receive none, 0.1 or 0.5 CRU randomly as a reward and 50 Diamonds for the CoinMarketCap loyalty rewards program additionally.

The answers on https://coinmarketcap.jotform.com/212422300549950 are  

Q1 Which storage layer protocol currently Crust provides an incentive layer for?
A1: IPFS

Q2: What technical framework is used to build the Crust public chain?
A2: Polkadot Substrate framework

Q3: What is the number of tokens generated when the Crust mainnet is launched?
A3: 20,000,000

Q4: In the Crust incentive consensus mechanism, what does the staking limit of a node depend on?
A4: Storage capacity

Q5: In what year and month did Crust open its storage function?
A5: February 2021

Q6: Which application has used Crust storage to deploy Dapp?
A6: Uniswap

Q7: In which month and year will the Crust mainnet go live?
A7: Sep 2021

Then you have to add CRU to your watchlist of your coinmarketcap account, set the watchlist to public, copy and fill in the link.
And eventually you have to input your Crust Main Chain address created before.

Please consider the other airdrops from CoinMarketCap:
Actually there are also SAND / The Sandbox and NFTB / NFTb.

All the best trades, bye.