21.——Could I use your dictionary, Mike? I’ve left mine back at home.

——___________. I am not using it myself.

A. It depends.  B. Come on.  C. Sounds great.   D. Go ahead.

22.——Is lily telling _______ truth?

——I suppose so. Never have I heard her telling ____ lie.

A. the; the   B. the; a  C.\;the   D.\;a