Though ______ to see us, the professor gave us a warm welcome.
Joy _______ as a language teacher in China for two years before she went back to London.
—Why didn’t you give back Robert’s e-dictionary yesterday?—I forgot ______ it here, but I mean ______ it to him tomorrow.
Was it at the school ______ was named after a hero ______ he spent his childhood?
Our neighbor has ________ours.
______ everyone has completed the work, it is possible to come to a conclusion.