John’s ability to learn from observations and experience___________ greatly to his success in public life.
She was very brave.Even though she'd hurt her leg, she________go back alone.
The fire spread through the hotel very quickly but everyone________get out.(全国)
I'm going to Europe on vacation together with John if I ________ find the money.(2012·全国Ⅱ)
I________to my cousin's birthday party last night, but I was not available.
Eye doctors recommend that a child's first eye exam ________ at the age of six months old.