Inow,wehaveraised50.000poundsf-优题课

In any unsafe situation, simply _________ the button and a highly-trained agent will get you the help you need.

press

to press

pressing

pressed

China's high-speed railways _________ from 9,000 to 25,000 kilometers in the past few years.

are growing

have grown

will grow

had grown

During the Mid-Autumn Festival, family members often gather together _________ a meal, admire the moon and enjoy moon cakes.

to share

having shared

shared

She and her family bicycle to work, _________ helps them keep fit.

which

who

that

Susan had quit her well-paid job and _________ as a volunteer in the neighborhood when I visited her last year.

is working

was working

has worked

had worked

A．that	B．which
C．who	D．it