Some young people these days just ______ go out of their homes to contact the real world.
----Go for a picnic this weekend, OK? ----___________. I love getting close to nature.
____ is no doubt ____ Jennifer will come to see me this weekend as usual.
He pretended _______ when his mother stepped into his room.
Johnny, you ______ play with the knife; you _____ hurt yourself.
Since 1949, the peoples living standard _______, causing a big _______ in population.