The reason ______he didn't come was ______he was ill.
A. why; that B. that; why
C. for that; that D. for which; what
_____manners are very important in every country is known to all，but the trouble is that different countries have different ideas about ______good manners are.
A. That；what B. That；that
C. What；that D. What；what
Dogs have a very good ______ of smell and are often used to search for survivors in an earthquake.
A. sense B. view C. means D. idea
I missed the last bus and had no money for a taxi，so I could do nothing but ____ home last night.
A. to walking B. walk
C. walking D. walked
_____ with so much trouble, we failed to complete the task on time.
A. Faced B. Face
C. Facing D. To face
If there is a lot of work _________．I’m happy to just keep on until it is finished．
A．to do B．to be doing
C．done D．doing
