以一个非常合理的价格_____________________

以一个非常合理的价格___at a very reasonal price__________________
各种颜色的袜子____socks in various colors____________
以……（价格）买下_____buy at the price of__________
亲自___in person_____
The white pants _are on sale__ (正在发售）for ￥20.
How much are the red socks?(同义替换）
__What's the price of_ the red socks?
We sell the green shorts for $20.(同义替换）
The green shorts__can be bought_ for $20.
I like the red sweater.(同义替换）
I like the sweater_in red__ ___.

a very reasonable price
socks of various colours
buy...at ...price/buy...for
in person/personally/ oneself
are being sold
What's the price of
are sold(后面那个空填不出来了）
in red

at a reasonable price
socks of different colors
at a price of..
on one's own