he will ________come or not is unknown.

A.to which B.which C.to where D.at which

A.so that B.if C.lest D.otherwise

A.joy B.pleasure C.attraction D.satisfaction

A.of B.with C.out D.on

A.sometime B.some time C.sometimes D.some times

A.reading more books B.finding new words in dictionaries

C.writing more D.using the words in everyday life

A.used words B.followed many things in nature

C.lifted heavy things D.grunted like a pig

A.made same words B.made different kinds of words

C.had a same language D.used some sounds

A.150 B.1,500 C.5,000 D.4,000

A.man never made sounds

B.man made animal sounds

C.man used to be like animals to make sounds

D.man learned from the animals to make sounds