Half of the workers here ________ under 30 ________.
| A．is;years | B．are;year old | C．is;years old | D．are;years of age |
These natural parks are very important for preserving many animals, which would _______ run the risk of
becoming extinct.
| A．otherwise | B．therefore | C．nevertheless | D．however |
People are always on the go , so they spend their weekend on housework .
| A．most | B．almost | C．mostly | D．nearly |
On the third floor there are two rooms, _____ is used as a meeting-room.
| A．one of them | B．the larger of which | C．and a larger of them | D．the largest one of which |
—Are you satisfied with her work, sir? —Not at all. It couldn’t be any _______.
| A．better | B．best | C．worse | D．worst |
—You know our manager has been in hospital for days?
—Yes.I wonder if he is ___ better now.
| A．any | B．some | C．very | D．too |