In summer people often wear dark glasses as ______ against the bright sunshine.
They asked me to have a dinner in an excellent restaurant with the, I said that it was at least five years since I _______ a good meal.
I think I was at school, _______I was staying with a friend during the vacation when I heard the news.
He is _____as a leader but he hasn’t_____in teaching.
The mistakes made by Chinese students are quite different from ________made by the Japanese students in English study.
As _______rule, apples are sold by _____weight and eggs by ________dozen.