( C )---___does have a piece of bread?
---Twice a week.
A.How much B.How many C.How often D.How long
【解析】考查相近短语辨析.选项A意为“多少”,修饰不可数名词；选项B意为“多少”,修饰可数名词复数；选项C意为"多长时间一次"或者"每隔多久一次",often是"常常"之意,表示"次数很多". 如：---How often does Mary go to visit the museum? 玛丽多久去参观一次博物馆? ---Twice a year. 一年两次. 选项D意为“多久”,多与完成时连用.
(C )I___Chinese.He____English.
A.speak,speak B.speaks,speaks
C.speak,speaks D.speaks,speak
【解析】考查主谓一致.
(A )This sign tells people_____birds.
A.not to hunt B.no hunting C.don't hunt D.not hunt
【解析】考查动词tell用法,即tell sb. not to do sth.告诉某人不要做某事；
(B )Jack can_____rabbits well.His rabbits are fat and lovely.
A.feeds B.feed C.to feed D.feeding
【解析】考查情态动词用法.can后接动词原形；