weren’t you at school yesterdaymorning,Li Lei —_________,sir.

We work together to achieve our common purpose: _________ world that is safer, cleaner and healthier than __________ one we are living in.

He focused his effort ____the house___sale for fear that the prices of them would go up suddenly.

The little girl looks________when she smiles

The most delicious bread in the world______ by Mom Please wait an hour to enjoy it