________ I borrow these books? — Sorry, only the books over there can be borrowed.

Let’s go ____ a trip to Mountain Huangshan. It’s beautiful. [ ]

The lady in this photo _______ be over fifty! She looks so young!

.The higher the oil price is, ___________to the global economy.

Can I use your bike this afternoon?_______ is under repair.－No problem. Here’s the key.