“Why don’t you go to the Science Museum?”—“I hear there’s ______ in it.”

As students, we ________ study hard to make our country more beautiful and stronger.

My younger brother dreams ________________ a spaceman.

Last month, doctors used a 3-D printer to rebuild the face of a person ____ had a bad accident.

It’s _______ that you’ve got a headache; you drank too much last night.