A dictionary is necessary if you want to learn English, so you’d 
better buy .
| A．this | B．that | C．it | D．one |
There are sixty minutes in ______ hour.
| A．不填 | B．the | C．a | D．an |
Why don’t you put the meat in the fridge? It will ______fresh for several days.
| A．be stayed | B．stay |
| C．be staying | D．have stayed |
The teacher asked us ______ so much noise.
| A．don’t make | B．not make |
| C．not making | D．not to make |
The number of the people invited ____fifty, but a number of them_____ absent for different reasons.
| A．are, is | B．is , are |
| C．is , is | D．are , are |
The girl ______ is reading under the tree _____my sister.
| A．which； is | B．whom； was |
| C．who； is | D．who； was |