2NA Colour idioms

http://www.bbc.co.uk/worldservice/learningenglish/language/theteacher/2009/05/090507_teacher_colour_blue_v1.shtml

https://www.vevo.com/watch/cyndi-lauper/true-colors-(video)/USSM20402177

2NI Second conditional

https://agendaweb.org/verbs/conditional-second-exercises.html

2NA Forth plinth

In 1841 the Fourth Plinth was built in Trafalgar Square. Of course, it wouldn't have been known as the Fourth Plinth then.

The pedestal was originally intended to display a statue of William IV, but due to insufficient funds, no one got round to that. The plinth remained bare for over 150 years — no one really knew what to do with it/cared about it enough to do anything.

And then... a decision was made. The plinth would be occupied by a succession of temporary works. The Fourth Plinth Project began in 1999... but only lasted three years. The plinth was bare once more.

The project was revived as The Fourth Plinth Commission in 2005 — and has been going strong for well over a decade. Here are the works that have occupied it since then, from most recent to oldest.

https://londonist.com/london/art-and-photography/every-work-of-art-on-the-fourth-plinth-so-far

https://www.theguardian.com/artanddesign/2018/mar/26/michael-rakowitz-invisible-enemy-should-not-exist-fourth-plinth-winged-bull-date-syrup-cans-defyin

2NI First conditional

https://agendaweb.org/verbs/conditional-first-exercises.html

2NA Permission, obligation, and necessity

https://www.test-english.com/grammar-points/b2/modal-verbs-permission-obligation-prohibition-necessity/

2NA John Lloyd: An animated tour of the invisible

Gravity. The stars in day. Thoughts. The human genome. Time. Atoms. So much of what really matters in the world is impossible to see.

https://www.ted.com/talks/john_lloyd_an_animated_tour_of_the_invisible