从方框内所给的选项中选择恰当的句子完成此对话．（有两个多余选项）
A：Hi，Johnny!You look so sleepy．What's the matter？
B：I don't feel well．（16） Sometimes I even keep awake all night long．
A：That's too bad．（17）
B：Yes．He gave me some medicine and asked me to count numbers in bed．（18）
A：Why not find out other ways instead？ （19） ．And if you have any problem，you may find someone you trust to talk about it．
B：Good idea!I will have a try!
A：OK．Don't think too much，and relax yourself．（20）
B：Thank you．
A．I hope you will sleep well soon．
B．You don't sleep well．
C．But neither can help．
D．Let's go to see the doctor．
E．You can also listen to some light music
F．Have you seen the doctor？
G．I can't fall asleep at night．