Mixed vocab review Crossword

‘Do you mind if I invite a few friends?’ ‘___ ____ ________.’ (used for politely agreeing with someone, giving permission, or saying ‘yes’)
Even after two months, we had only really ___________ ____ ____________ of that fascinating country. (=deal with only the simple or obvious parts of something)
The university library maintains subscriptions for more than 300 _______________. (=a magazine on a particular subject that is published regularly)
In June the town is _________________ by tourists. (=exist in such great amounts that someone or something cannot deal with them [usually passive]).
She stooped to ___________ the key from the ground. (=get something back, especially something that is not easy to find [formal])
Teachers have adequate professional space to work ______________. (=in a way that achieves a lot of something or achieves good results)
The problem lies in the software and not in the computer _________. (used for emphasizing that you are referring to a particular thing and not to anything else )
These are beautiful , extremely important creatures who maintain _______________ balance in our oceans. (=relating to the environment and the way that plants, animals, and humans live together and affect each other)
Some species _______________ lower temperatures better than others. (if plants or animals ______________ particular conditions, they are able to exist in those conditions)
Spiders usually catch their _____ by building webs. (=an animal that is caught by another animal and eaten)
Most of the world’s fertile land is already being _____________. (=make land suitable for growing crops or plants)
We are discovering more and more diseases that are _____________ to antibiotics. (=not harmed or affected by something)