. ---I am green at everything.---Don’t worry. _____ you get older, you get more experience.A .When B. Till C. As D While
--- Who is the man ___________here? --- Mr. Black.
The stranger stopped and turned around ___________to see is someone was following him.
Where is it___________you picked up the wallet yesterday ?
---He admitted ___________in the exam. --- That’s why he was not admitted ___________universities or colleges.
. ---What has Tom been doing recently? ---I don’t know, ___________care.