What difficulty _____you have ______the problem

The light ________ and the room became complete dark.

The movie starts at 8:30, and we can have a quick bite before we go.—_____. See you at 8:10.

下列有关文化常识的表述，不正确的一组是（ ）

_ the satellite launch drawingnear, the research workers put their hearts to the test and always stayed uplate.