Dad, can I go out to play basketball now ? —– Sorry, you can’t ______you haven’t finished your homework

Italians often approach others closely and are moreto touch them

did you go on National Day —Jiuzhai Valley I ______ to go to France, but theexpense was too high

As we all know, the number of Tibetan antelopes(藏羚羊) ________ becoming ___________.

The pull of gravity depends upon size, _______, upon mass. An object, whether its mass is big or small on the earth, ________in weightless conditions, like the outer space.[ ]