The girls in the photograph are twins, is my classmate in high school.
| A．the taller of them. | B．the taller of whom. |
| C．the tallest of that | D．the tallest of who |
If you _______ a mistake in reviewing the report, please bring it to my attention.
| A．come along | B．come across | C．come around to | D．come about |
This is a very special flower and it can _______ a strong sweet perfume at night.
| A．give in | B．give up | C．give out | D．give away |
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 |