He sleeps _____ day, but _____ night he gets up.A during, at B during , at the C during the , at D during the ,at the
He is kind and always ______ help to others.
My parents promise ______ it to the teacher.
The TV is always ______ at my home.
Miss Liu said ______ she would leave the message on the headmaster’s desk.
-______ a visit to Beijing this summer holiday? -That’s a good idea!