---You should have thanked her before you left. ---I meant _______. But when I was leaving I couldn’t find her anywhere.

An underwater hotel has opened in Africa，with its rooms＿on the bottom of a three－level floating building．

While waiting for the opportunity to get    , Henry did his best to perform his duty.

They found the remains of buildings     under the sand，together with a lot of treasures．

The airport is far from here，and       there on time，you’d better take a taxi.