...Who_ the door? Please go and see,Jane,---Ok,Mom. A.knocks...
Please go and see,Jane,---Ok,Mom. A.knocks on B.knocked on C.knock on D.is knocking on (2). 2.When National Day comes,we have a_ holiday. A.seven-day B.seven-days C.seven days D.seven day (3). 11.Look! The students_ the classroom. A...