We urge ________ extreme caution in ________ use of this medicine, which has not been officially approved yet.
A. an; the B. an; / C. /; the D. /; /
C
— Mike, the results are ________ with our earlier research.
— Fantastic! That's what we've been expecting.
A. apparent B. sustainable C. concrete D. consistent
D
It is said that this plain lovely hairstyle first ________ in the 1990's.
A. broke out B. caught on C. got off D. held up
B
I don't think you realize the ________ of the situation, or else you wouldn't feel so relaxed.
A. gravity B. assessment C. framework D. similarity
A
A concert will be held ________ the worldfamous musician, who will personally play his favourite music at it.
A. in memory of B. in favour of C. in reply to D. in salute to
C
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