He started to learn English in 1990 and in the years ________ he kept on using it in his work.
The old lady who caught a bad cold complained that the doctor was ______ too much for the treatment given to her.
Watch out for these animals! They could be terrified ______ a sudden loud noise.
We have dresses of various styles and patterns on sale and you may take ______ suits you best.
Our factory has been developing rapidly these days. This year’s production is five times ______ it was ten years ago.
A new study found ______ a teacher has anxiety about maths, ______ feeling can influence how his or her female students feel about math.