A.2 B.3 C.4 D. 5
A.1 B.9 C.4 D.5
A.O(m) B.O(n) C.0(m+n) D.0(m*n)
A."mo" B."or" C."in" D."ng"
A."goodmorning" B."good morning" C."GOODMORNING" D."GOOD MORNING"
A."good" B."ning" C."go" D."morn"
A.BCDEF B.BCDEFG C.BCPQRST D. BCDEFEF
A.35 B.36 C.37 D.38