He is quite confident,_____,in my opinion,is most important for his future development.
Scarcely _____ raining _____ the PLA fighters started on their way again.
He ______ English for six years by the time he takes his examination.
Never _____ forget the days when _____ together with you.
As you are now a member of our society we shall let you ______ our secrets.
Here _____. This is our classroom.