Only after he realized the significance of mastering two languages __________ English carefully.

Is that Lucy’s sister, Lily—No, it _______ be her. She has gone to English.

Shirley, a real book lover, often brings home many books to read _____ the library[ ]

Do you doubt ____ he’ll be fired by the school? — No, not a bit. But I doubt ____ he will bury himself into study.

In _____ eyes of some children, playing on the Internet can only bring them______ fun.