About 22.4 percent of all homes in urban areas were lying vacant in China in 2013, the vacancy rate was 1.8 percentage points higher than ________ of 2011 according to the survey.
| A．one | B．it |
| C．that | D．which |
__________,we must believe in ourselves and believe that we can do something well.
| A．However life is difficult | B． However is life difficult |
| C．However difficult life is | D． However difficult is life |
In 1800s, a group of adventurers(探险家) ______ on their exploring trip. Five days later, they came to what is now known as Quebec.
| A．set up | B．set down | C．set about | D．set out |
--It’s said that no one ______ light a cigarette at a gas station.
--- Yes. Safety always comes the first.
| A．can | B．may | C．shall | D．must |
I don’t know ______ or not the books _____ to the homeless children next month are really useful.
| A．if, given | B．whether, to be given | C．whether, giving | D．if, which are given |
—I failed again in the math test.
-- ______.
| A．Why | B．Cheer up | C．No problem | D．That’s all right |