It was not immediately obvious _____ water was to be fundamental to the development of life.

Don’t worry. He ________ you as soon as he gets home.

Let’s go to watch the football match and cheer for our school team this afternoon, OK?—Great! I’d like to. Which team will our team play _____? [ ]

The young man plays violin very well, but he plays basketball badly.

Will you drop ________ us tomorrow evening for a talk?—Sounds great! [ ]