A. ordinary B. common C. particular D. rare
A. with B. in C. for D. at
A. =SUM(1,2,...,9,10) B. =SUM(E1;E6) C. =SUM(A1;E7) D. =SUM(“l 8”,“25”,7)
A. entertainment B. luxury C. survival D. adaptation
A. inefficient B. effective C. efficient D. sufficient