Nowadays school bus safety has drawn much attention nationwide for children’s safety is _______ worries parents most.

—The two people speak different languages and can not communicate with each other well.—Oh，I see. That’s ________ misunderstanding occurs.

________ seems strange to us is ________ the troublesome boy is getting along well with all his teachers.

---Tell me something about your adventure in the rainforest, please.---We lost our way in the forest and ___ made matters worse was ___ night began to fall.

One advantage of owing your own car is ________ you can go anywhere at any time you like.