--- An explosion at a coal mine killed at least 62 workers and left another 13 missing.--- Yes, ________news came as ________shock to us all.
In this experiment, they are woken up several times during the night, and asked to report what they____.
.When he was alive, the old scientist used to say that knowledge ____from practice and he gained his experience by doing a lot of practical work.
.She _____ to the office than she got down to writing the report.
He ___articles for our wall-newspaper these three years, and he ___about forty articles.
—— Look at the black clouds.It ______ soon. —— Sure.If only we _____out.