高二英语Understanding each other教案
a) must be sent b) would be sent c) be sent d) were sent21. ________ in the regulations that you should not tell other people the password of your e-mail account.a. what is required b. what requiresc. it is required d. it requires22.the chairman thought_____ necessary to invite professor smith to speak at the meeting. a. that b. it c. this d. him
