Hiking is ______ great fun. You will get close to______ nature and take exercise at the same time.

________the words on the blackboard!Can you_________ them

Nelson Mandela thought it was his duty to help black people get _____ rights as white people. [ ]

－So many problems! I’m too tired.－You should try to _________ them by yourself. You’re not a child any longer.

We were swimming in the lake ______ suddenly the storm started.