Level 56 Level 58
15 words 0 ignored
Ready to learn Ready to review
Check the boxes below to ignore/unignore words, then click save at the bottom. Ignored words will never appear in any learning session.
Dinosaurs became extinct a very long time ago.
complex -made things more difficult
form / devise
1)perspective 2) introduction
difficult situation: serious situation
push, drive, push, or cause to move in a particular direction, typically forward