_______ that everyone stared at him.
The physics teacher once said that as __________ well-known, thunders __________ make electricity.
I'm sorry to __________ you, but can you tell me how to get to the library?
—Beautiful day, isn't it? Let's go out for a picnic.— __________.
It was so disappointing last year, but now we are __________ that we'll go up.
I am one of the students who __________ English well in my class but he is the only one of us __________ maths well.