Peter has worked for our company _______ 1999, _______ nearly ten years. _______ the time, he has been working very hard. A. since / for / During B. for / in / At C. on / from / For D. throu
Peter has worked for our company _______ 1999, _______ nearly ten years. _______ the time, he has been working very hard.
A. since / for / During
B. for / in / At
C. on / from / For
D. through / about / On