A. running;friend; B. running;friends; C. runing;friends D. run;friend's
A. is;one's B. is;her C. are;his D. are;her
A. watch B. seeing C. watching D. reading
A. aren't B. do C. don't D. are
A. second B. two C. a second D. all second
A. Yes; I have one B. Yes,I have it C. Yes,I do D. Sorry,I don't
A. It doesn't matter; B. Thank you; Certainly,here you are; D. Not at all.
A. I'm sorry B. Excuse me,May I come in? C. Let me in, D. I don't want to be late.
A. green apple B. a green C. a green one D. one green
A. those who have previous experience of working abroad B. those who have specific skills to offer C. those who are more senior