____ difficult the work may be, we must go all out to finish it ahead of time.
A. Whatever B. However C. How D. What
What worried the child most was ____ to visit his mother in the hospital.
A. his not allowing B. his not being allowed
C. his being not allowed D. having not been allowed
The baby cried again. The young mother felt very ____ and her husband wore ____ expression on his face, too.
A. confused; confused B. confusing; confused
C. confusing; confusing D. confused; confusing
There is ____ Mr. Smith at the door who wants to speak to you.
A. a some B. certain C. some a D. a certain
To make sure that he was at home, I called him up ____ .
A. by chance B. in general C. in particular D in advance
In face of ____ failure, it is the most important to keep up ____ good state of mind.
A. 不填, a B. a, 不填 C. the, a D.不填, the
