A free printable worksheet for grades 4 and 5 (CEFR A2): ask and answer about nature and the environment with: We should … to protect the … / Don’t throw … in the …. It has 16 questions with flashcards to cut out, writing and gap-fill exercises, and the answers on the last page. Print it here or download the PDF, then play the same words as a team game on the board. More English worksheets for grades 4 and 5.