–It is said that Bob will drop out of school because his family cannot afford the school fee.

– _____, let’s give him a hand.

—Won't you go shopping with your mother?

—No.________ she promises to buy me a new sweater.

A．Now that          B．If only            C．As though         D．Unless

______environmental damage is done，it takes many years for the ecosystem to recover.

A．Eyen if    B．If only  C．While D．Once

He had his camera ready ____he saw something that would make a good picture．  

A．even if    B．if only    C．in case   D．so that

_______environmental damage is done, it takes many years for the ecosystem to recover.

A．Even if            B．If only            C．While            D．Once