His sacrifices for the country were never officially _____, which made all of us feel discouraged．
| A．acknowledged | B．appealed | C．recommended | D．commanded |
_The beginning of agriculture was a big step in human progress _______which nothing could compare until our information age.
| A．in | B．for | C．with | D．by |
_Hai Yan is a famous Chinese novelist, _______writings are thought highly of.
| A．whose | B．who | C．which | D．whom |
_Was it eleven o’clock _______you arrived home last night?
A.when that ince hile
_Along with the letter was his promise_______he would visit me the coming month.
| A．which | B．that | C．what | D．whether |
I have been keeping the portrait_______I can see it every day,as it always reminds me of my childhood in Paris.
| A．since | B．where | C．as | D．if |