—Someone is knocking on the door. Is it Nancy?—It be Nancy. She has gone to Shanghai on business.
Mary used up late, but now she is used up early.
—are you going to Chiang Mai? —In two weeks.
The boy is ________ see the teacher because he ________ a mistake.
They ate rice and chicken yesterday and they ate noodles ________.
The little boy is ________ young ________ ride a bike.