—Must we keep the window _______ all the time? —No, you don’t have to.
——Would you like to go to the park with me, Susan? ——I’d like to, ____ you don’t want to go alone.
——Are your parents doctors, too? ——No, they are teachers. ___ of them love teaching very much.
Class was over, but some students continued _______ in the classroom.
Could you make her _______ her radio? It’s too noisy.
—Hi, Linda. _______ a hot day! Let’s go swimming, OK? —That’s a good idea!