—Did you manage to get in touch with David?—No, I didn’t. I ______ him up, but there was no answer.
It was for his excellent work _____he had done lately ____ he was awarded the Nobel Prize for Physics.
The impact of Einstein’s breakthrough in the field of photo electric effect ____ the understanding of the universe was simply tremendous.
– Oh my god, I left my laptop in the taxi!– _____; let’s call the taxi company first.
I don’t say I am against their plan. But the trouble is _________ they do doesn’t agree with what they say.
Could I just ask one question about the plans for a new building _____ at the beginning?