One of the main __________ of the summit was “sustainable development”,or the question how we can continue developing the world without damaging the environment.
Every minute is made full ______ of ______ our lessons.
---- Excuse me, Dad, but I am going to the club to meet my friends in the football team. ---- OK. _________.
Some of the naughty boys were standing by the Green Lake, ______ swimming suits.
--- Could I borrow your umbrella , please? ---- I’m afraid you _______.
I ‘m going to buy my daughter another interesting novel, ______ she would like to read.