grep/awk to only print lines with two columns in a file

Shell Programming and Scripting
1

Hey,

Need some help for command to print only lines with two columns in a file

abc 111
cde 222
fgh
ijk 2
klm 12 23
nop

want the ouput to be

abc 111
cde 222
ijk 2

Thanks a lot in advance!!!

2 
awk ' NF==2 {print $0} '   myfile  > newfile
3 
grep '^[^ ]* [^ ]*$' INPUTFILE

grep ' ' INPUTFILE | grep -v ' .* '

perl -ne 's/ / /g == 1 and print' INPUTFILE
4

Thanks guys!!!