We should take measures to improve ___________ is called the quality of living.
A. that B. which
C. who D. what
The girl seldom, _________, turned to her brother for protection.
A. if so B. if not
C. if ever D. if possible
The air quality in the city, ________ is shown in the report, has improved over the past two months.
A. it B. that
C. which D. as
_______ he was admitted to Tsinghua University---- he was so clever and hard-working.
A. No wonder B. Even if
C. Now that D. As if
We can go on Tuesday or Friday, _______ you prefer.
A. whichever B. whatever
C. no matter what D. no matter whichever
I often stay up late into the night, _________ leads to my sleeping in class.
A. that B. which
C. it D. that
