HE (never) returns the books on time.括号提问 ______ ________ does he return the books on time?
2.when l stayed in the town,l visited some schools.
___my_____in the town,l visited some schools.
3.last sunday alice fell on the ice many times.
last sunday alice had_______ _________on the ice.
4they ate against our project.
they aren't_________ _______of our project.