Which is the biggest number of the four—_________.

What _______ your favorite subject — My favorite subjects _______ art and P.E.

Well, I do think the rabbit is a beautiful, gentle animal which can run very fast. —_____.[ ]

The art centre is _______ used to be a factory, _______ millions of tractors were made. [ ]

We are going to Jiuzhaigou this summer. —— ________________.