Don’t disturb Tony, for he ________ all night and has just fallen asleep.
________ is known to all is that effective measures should be taken to deal with the problem of the overexploitation of our resources.
I think you should work harder ________ you are satisfied with the way things are.
.Ram explained to his mother ________ he would get home late that night because of extra work.
Air pollution is getting more and more serious, so we must take action ________ it is too late.
Sarah Brightman, ________ will fly to space in 2015, is the first woman to fly there in the field of music.