____________ with the efforts that the students made, all the teachers nodded and smiled.
| A．Satisfying | B．Having satisfied |
| C．Satisfied | D．To be satisfied |
In the botanical garden we can find a(n) _______ of plants that range from tall trees to small flowers.
| A．species | B．groups | C．amount | D．variety |
—You can’t finish the book in less than an hour, I suppose?
—______.
| A．Yes, I’m sure I can | B．No, hardly |
| C．Sorry, I can’t | D．I don’t think I can |
Many manufacturers were accused of concentrating too heavily on cost reduction, often at the ______ of the quality of their products.
| A．expense | B．exposure |
| C．expansion | D．expectation |
—I would like to speak to Mr. Martin.
—There’s nobody here by that name.
—Sorry, I ______ the wrong number.
| A．should have dialed | B．must dial |
| C．could have dialed | D．must have dialed |
Long skirts have been ______ for a long time in the West, but they are coming back this year.
| A．out of order | B．out of fashion |
| C．out of control | D．out of place |