the dog,if----properly,-----a good hunting dog.

the dog,if____properly,_____a good hunting dog.a.had been trained...would have been madeb.trained...will maketo master a foreign language like english requires hard work,so you ___study too hard.a.can'tb.ought toc.shouldd.musn't我表示根本看不懂-did tom join you?\-no,_____,but he happened to have fallen illa.would like tob.was toA不可以么?