The reason why she had a headache was _______ she had been reading for too long.
—Have you known each other for long? —Not very long,____we started to work in the company.
The changes in our chemistry lab will cost quite a lot,____they will save us money in The long run.
.—____can I deal with such a situation?—Take____measure you think best.
These two countries are similar____they both have a high snowfall during winter.
.____are the days when teachers were looked down upon.