. Don't _____ the news to the public until we give you the go-ahead (许可，准许).
| A．release | B．discard | C．relieve | D．retain |
The sperm whale can dive up to _____ of 1000 meters.
| A．the depth | B．a depth | C．depth | D．deep |
The children are playing in the _____ of the beach.
| A．sand | B．sands | C．sandes | D．sandy |
When the students heard the news, all of them were in _____.
| A．higher spirit | B．high spirits | C．a high spirit | D．a higher spirits |
_____ will conquer nature.
| A．The man | B．Man | C．A man | D．The men |
I earn 10 dollars _____ hour as _____ supermarket cashier on Sundays.
| A．a, an | B．the, a | C．an, a | D．an, the |