4. Do what I tell you, ______ you'll be sorry.
A. or else B. as a result C. but D. besides
5. Smartphone is superior. It ______ renders all other gadgets useless ______ helps modern citizens to improve both their productivity and efficiency by leaps.
A. not only .... but also B. neither ... nor
C. over ... and above D. either ... or
Loga
Sinh Học lớp 12
