Jack is helping his mother clean the house.为啥要用现在时搞错了,为什么用进行不用现在时,为啥clean用原形

tom is helping daming ＿his english Jack is helping his mother clean the house.为啥要用现在时搞错了,为什么用进行不用现在时,为啥clean用原形 His uncle is helping his aunt c___ _ the house Simon is helping his brother with his English His name is Jack London.Jack is his______ name? His first name is jack.对jack进行提问 His first name is jack （His first name is jack（ ） （ ）his first name? is Jack his why teeth brushing Where is Jack?He __________ his country. Peter,helping,is,his,friend连词成句 Jack is good at his studies.(保持原意)Jack _________ _________ in his studies. Jack is nine years old.Today is his--------birthday快 His little brother is playing basketball.And Jack is ____. Jack is very tall ,but his sister is s_____. jack is tall,but his brother is very his f_____ is Jack.He is a student. Jack is stronger than any other student in his class.回答A,Jack is stronger B,Jack is the stongest The boy is helping his teacher ______(plant) trees in his school.