His ability is beyond question; _____ has been in doubt is ____ he is prepared to work hard
—Has the little boy passed P. E. test? —He has tried twice and the teacher will allow him to have third try.
—I am wondering if we could go boating on the weekend. —It a good idea.
The building around the corner caught fire last night. The police are now____ the matter.
The man who was being followed stopped from time to time ____ he wanted to tie his shoelaces.