The play was so boring _______ I could hardly keep myself from falling asleep. (2014, 6. B)
A. that
B. which
C. what
D. whether
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The decision about such a big project can not be made ____ each member of the board agrees.(2012,12,A)
A. if
B. unless
C. though
D. as
It is easy to get the software we need ____ the market is small. (2011.6. B)
A. as if
B. so that
C. although
D. until
The task will not be fullfilled ____ we get help from other departments.
A. if
B. unless
C. since
D. when
________ she has been working in China for only two years, she speaks fluent Chinese.(2018,6.B)
A. When
B. If
C. Although
D. Until