小题1:My grandmother is already in her _________ (ninety), but she still does exercise as much as possible every day.

小题2:---How is your business going?      --- Oh, it couldn’t be _________ (bad).

小题3:No one bought a present for the twins, so they made ___________ (they) a model plane.

小题4:The famous singer’s ____________(arrive) made the fans rather excited.

什么是斟酌使用的货币政策？