.The medical research shows eating too much fat can_________ heart disease and blood pressure, so you must be more careful with your diet

By the time he arrived at the airport, the plane .

ld have come here on time, but he_____ in the heavy traffic on the way.

I can play ____soccer ,and I can play ___guitar too .

I wonder why you didn’t take part in the speech contest yesterday afternoon —I’m terribly sorry, I________ myself