--Bob, How is your project? I heard you started it last Friday, right?

---Oh, I ____for it. But I haven’t decided when to do it.

A．have been preparing

B．had prepared

C．have prepared

D．was preparing

—What’s Jack up to in the shoe shop? He’s there for ages.

—It’s ______ that he hasn’t decided which pair to buy.

A．sure

B．obvious

C．confusing

D．curious