Unit 5 Seasons 习题一、选择题。 ( )1.In autumn, Helen often ___________ at the weekends. A. go skating B. go swimming C. go boating( )2.Spring comes in __________. A. May B. March C. September( )3.Spring is ______.A. warm B. cold C. cool( )4.What season do you like? A. flower B. su...