He is too tired ______ any more.
A．not to walk B．to walk C．walking D．not walking
I had a little trouble English grammar.
A．learn B．learned C．learning D．to learn
I need time_____ my computer.
A．to mend B．mending C．mend D．mended
_____should not be allowed to go out at night.
A．Twelve-year-old B．Twelve-year-olds
C．Twelve year old D．Twelve years old
Listening is just as ______ as speaking in language learning.
A．important B．more important
C．most important D．the most important
— ______ will your father come back from New York?
— In two days.
A．How long B．How many C．How often D．How soon
