She________the opportunity,but unfortunately she just let it go.
Newton was sitting under an apple tree ______ an apple fell onto his head.
The clock has just _________ twelve. All the teachers should stop _________ and let the students have a rest.
A thunderstorm is likely to come. Let’s hurry up so as not to __________ it.
Although their new factory building is still under construction, we have already placedorder for 200 pairs of shoes.
----Have you worked in this company for a long time? ---- Yes, since I _________ from the college.