Astronaut as he was, he didn’t know _______ he had to _______ in outer space.
Our factory has been developing rapidly these days. This year’s production is five times ______ it was ten years ago.
It was not until I was injured in a car accident ______ the real American society.
―The weather is changeable here. Please take more clothes.― _________.
The old lady who caught a bad cold complained that the doctor was ______ too much for the treatment given to her.
The international agreement, __________to help people kick off the habit of smoking, was signed two years ago.