A new case study says Chinese companies face tough _____in the US and have a long way to go to be successful.

Little Oliver can always _____ his parents, who will give whatever he asks for.

—Language learning is much ________ for children.—Yeah, I quite agree. Their minds are more flexible.

________ children whose parents had died in the earthquake________ sent to live with families in other cities.

I had ____ him not to stay up late, but he still didn’t go to bed until midnight.