This my sister and these my parents.

Why were they ______— Because they saw something ______.

China launched Shenzhou-9 manned spacecraftwith three astronauts at the Jiuquan Satellite Launch Center in ______northwest of China at 18:37p.m.June 16, 2012, which was ______ big success andit will fulfill China’s first manned space docking mission.

Oh, dear! The key ________ the door _________ in the room .

Sorry, I can’t work out this problem. —Try again, please. It’s only ______ difficult.