There is no greater pleasure than lying on my back in the middle of the grassland, ____________ (stare) at the night sky. 12 . Friends like you make it a lot ______ _ _______ (easy) to get along in a new place. 13 . Skilled workers also combine various hardwoods and metal _____ ____ ___(create) special designs. 14 . Though they did all they could ______ (help) them but times were tough for them. 15 . There are still many problems _________________ (solve) before we are ready for a long stay on the Moon.