The university estimates that living expenses for international students ______ around $8,450 a year, which ____ a burden for some of them.A are;are B. is;are C. is;is D. are;is
86. Wang Lin was elected ______ all he was the tallest.
87. His teaching _____ was raised to twelve hours a week in college.
88. Lying in bed, he was _______ awake with his eyes fixed on the ceiling.
89. He was so tired that as soon as he lay down he fell _______ asleep.
90. We all like Jack because he is a man _____ everybody thinks is pleasant to ______.