It was not until last July _____________ we started to distribute e-readers and launched an e-book store.(2017年12月第27题)
A. that
B. who
C. which
D. whom
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This store doesn ' t sell fumiture, but the one across the street_______________.(2016年12月第22题)
A. is
B. will be
C. do
D. does
The presentation of your product is so important ____________ it often determines whether a customer buys from you.(2016年12月第24题)
A. than
B. that
C. unless
D. if
Only by adopting more creative approaches________________ to overcome present-day challenges.(2016年6月第26题)
A. we can hope
B. can we hope
C. hope we can
D. can hope we
Only after the secretary saw the train disappear in sight __________________ the railway station.(2015年12月第24题)
A. he leaves
B. has he left
C. he left
D. did he leave