We have planted many trees in order to ____wind and sand in the desert.

This problem may lead to more serious ones if ______unsolved.

The lecture was so complex that I simply couldn’t ______ at all. Could you explain it to me?

ou got any particular plans forthe coming holiday—– Yes, _______, I’m going to visit somehomes for the old in the city

To be ______ changing times you cannot have your body in the 21st century and your head back in the past