I have no one ________ me, for I am a new comer here．

help

helping

to help

to have helped

The engineers made two big plans for the dam, ________ was never put in force．

one of them

which

one of which

every one of which

________ the temperature might drop, coal was prepared for warming．

To consider

Considered

Considering

To be considered

________ from endless homework on weekends, the students now find their own activities, such as taking a ride together to watch the sunwise．

Freed

Freeing

To free

having freed

Julia's parents were quarrelling about her ________ she was quite unable to tell why．

unless

in case

until

though

Though ________ on the farm for ages, he wasn't equally treated and wanted to give up the job．

hiring

hired

hire

to hire

I was so ________ with him that I recognied his voice the moment I picked up the phone．

known

famous

familiar

cautious

A book recording former Chinese President Jiang Zemin's overseas visits from 1990 to 2002 _______ at Beijing's Diaoyutai State Guesthouse．

had released

had been released

released

was released

________ by keeping down costs will the company make more money．

Only

Just

Still

Yet

China, a country with 145 million elderly people, will ________ an aging society during this century, according to Chinese population experts．

suggest

remain

replace

become