Mount Wuyi is worth ______. The mountains there are covered ______ all kinds of green plants.

－ ________ does the bridge made of steel weigh －About 90,000 tons.

I want to buy a story book in the bookshop, but there are ___________ in it.

These are your books. Please .

I am going to the dentist at 4 o’clock and it is 3：30 now.— Well, if you ______ leave earlier today, please ask the director for permission.