Experts believe that language learning is a process ______ skills are more important than grammar rules.
We’re advised not to leave the water ______ after using it.
She ______ have attended that meeting, for she was doing paperwork in the office then.
I know little about the accident because not much ______ about it up to now.
______ the task in time, we had to work late into the night.
The purpose of the article is to draw public attention ______ the problem.