小明跑步健身，坚持一段时间后想放弃，以下句子最适合用来激励他的一项是（　　）

（2014年安徽省合肥市高三第三次教学质量检测）27The general manager can’t use his office at the moment, which ______

can be enjoyable, but ____ can be appreciatedunless you like it

What do you think of ______ film The Founding of a Republic (建国大业) —It’s really _______ exciting one . I can see lots of famous actors in it .

Excuse me， Maria. Can I use your bike—Sure. Here you are. But you must return it _____ time.