He stayed patient and answered every single question,_ _ _ _obvious the answer was.
A. no matter when
B. no matter whether
C. no matter what
D. no matter how
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Generally speaking,you should arrive at the airport with plenty of time_ _ _ _.
A. sparing
B. to spare
C. spare
D. spared
In most cases,panel interviews were_ _ _ _than those held by single interviewers.
A. more reliable
B. reliable
C. most reliable
D. least reliable
They opened a new store in our city,but not until last week_ _ _ _it.
A. we visit
B. we would visit
C. did we visit
D. have we visited
If I were you,I_ _ _ _job-hunting by visiting the websites of these companies.
A. will start
B. had started
C. start
D. would start