—Were you at school when it began to rain? —Yes. I with my teacher at that time.
You won't pass your exams________ you work harder.
You look pale today , I think the red T-shirt ___good ____you
Boys and girls , more attention should be paid to ____the word correctly
.I am not sure ____ . Which of the following is not right?
Do you know if she ____to visit us ? I think she will come if she____ free tomorrow.