Your classroom is so dirty. Everyone should keep it ______.
| A．dry | B．open | C．clean | D．quiet |
My mother asks us _______ fingernails long.
A. keep B. to keep C. not to keep
The old man didn’t have a rest ______ his son came back..
A. after B. until C. when
My mother always ______ clothes in the evening, but tomorrow she ______ them in the afternoon.
A. washes, washes B. washes, is going to wash C. washed, washes
We should keep our classroom _____.
A. cleans B. cleaning C. clean
They had a _______ rest yesterday.
A.3--hours B. 3--hour C. 3 hours