Where’s Mabel? —She _____ ping pong behind the teaching building

There is ‘u’ and ‘n’ in the word ‘university’.

It isn’t going to rain, so you takean umbrella with you.A．mustn’t

do you think of _____gifted chemist from London— Well, sometimes his behavior is beyond ______comprehension.

________ these experiments were successfully completed would we think of going into humans.