—Where did you find our chemistry teacher? —It was in the lab ______ he was doing his experiment.
.Our team was ahead during the first half, but we _____ in the last ten minutes.
It is the first time that I ___ this kind of moon cake.
While listening carefully, the students___ what their teacher said.
Sam always pronounces my name wrong. Do you think he does it____ ?
My father told me that he had___ hard life in his childhood.