in summer,we often go swimming 为什么swim要加ing?

we often wear (g ) in summer.以g开头的 We often go c____ in summer vacation. we often go swimming in summer.改写成第三人称he We often go swimming in summer.(改写成第三人称He) We often go swimming in summer改写成第三人称 in summer we often go swimming p-- near here we often have --------冰激凌 in summer根据中文填空 IN SUMMER ,WE OFTEN FOBOATING ON THE L____WHY it often rain in summer In summer we often _____(swim) in that river.He _____(dance) very well in summer,we often go swimming 为什么swim要加ing? We often lie on the b____ near the sea and enjoy the sun in summer In summer,it is very hot here.So we often have cold() to keep. We often lie on the b____ near the sea and enjoy the sun in summer In summer we often sit out on the balcony b_____it goes very h____inside the apartment . we often have a picnic in summer vacation.(否定句,要理由） we like swim in summer. It often ___(rain)in summer here.