If you keep doing ____ these for a long time,you are sure to
If you keep doing ____ these for a long time,you are sure to
If you keep doing ( ) this for a long time,you are sure have
if you keep doing like this for a long time,you are sure ___
If you keep doing l_____ these for a long time
you are sure to succeed ( )you keep trying. A.as long as B.w
Don't keep us ____(wait) for a long time ,You must hurry.
After you ____(study) for a long time,why not consider doing
.I'm sorry to keep you ___ for a long time.A.to wait B.waiti
I am sorry to keep you _______(wait)for me for a long time.
I am sorry to keep you waiting for me for a long time
Sorry to keep you waiting for such long time.
1.Are you _____of doing such a thing for so long a time?