---I’m going to the States for further study. ---How long ____ you ___there?
1. Would you please __the paper for me and see if there are any obvious mistakes?
________ many times , he finally understood it.
The teacher together with the students ________ discussing Reading Skills that ________ newly published in America .
—You speak very good French ! —Thanks . I __________ French in Sichuan University for four years.
Not until I came home last night ________ to bed .