—Why didn’t you go to school yesterday?—______ my mother was in hospital and I had to take care of her.A. Then B. Because C. If
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!
These animals are in danger.We should think ______ to protect them.
Either you or I ______ going there tomorrow.