________ his spare time that his English has improved a lot.

it is during his spare time that john has been studying a co His English has been improve a lot .His English has improve To make this model plane ________ most of his spare time.A.t in his spare time or at his spare time 高一英语单项选择He has greatly improved his spoken English by learni Such good use has been ___ ___ his spare time ___（以至于）his En Such good use has been made of his spare time (as) his Engli Although he has taken a lot of medicine,his health ________ 能不能说my english has improved a lot 就是说improve一般用不用被动语态? there a lot of visitor in his house,he has no time to talk w Jack has put _____ so much weight that a lot of his clothes He taught ___English in his spare time.