21（）

--Which foreign language are you better at, English or ...

单项选择题--Which foreign language are you better at, English or French
--I am sorry I know ______ of English and ______ of French.

The reason ______ he explained was not ______ ! expecte...

单项选择题The reason ______ he explained was not ______ ! expected.

A good ______ of animals hibernate and during their hib...

单项选择题A good ______ of animals hibernate and during their hibernation they eat ______.