After a long walk, they______ pass over the mountain.
    A.  could be able to  B.can  C. would       D.were able to 

After a long walk, they have ________.

A. given in               B. given back          C. given out          D. given over

After a long walk in the mountainous area, my legs___and I    couldn't go any further.

 A,gave out   B,gave off C, gave in  D,gave up

______ after a long walk, Mike called and said he couldn’t come to the party.

A．Having worn out    B．Being worn out     C．To wear out        D．Worn out

．After a long walk, the little boy got home at last, ________.

A. tiredly and hungrily          B. tiring and hungry

C. tired and hungrily            D. tired and hungry