Do you know when the first train __________ in China? A. was produced B. is produced C. Produced
.在字母表中,______和______ 两个字母可以单独成词。
This is _____ “J” and that’s _____ “F”.
Thank you ______ your family photo.
Tom and I ____students.
--- Is this_____ computer game? --- Yes, _____ is. It’s _____ computer game.