21.Listen!Someone(knock)atthedoor.22.Theguardsaidtoherthathe(notlet)herinifshehadnopasswithher.23.IrememberedthatI(leave)mykeytothehideinthereading-room.24.Theteachertoldthechildrentheearth(he)roundthemoon(

Question

21.Listen!Someone (knock) at the door.
22.The guard said to her that he
(not let) her in if she had no pass with her.
23.I remembered that I
(leave) my key to the hide in the reading-room.
24.The teacher told the children the earth (he) round the moon (more) around the earth.
25.I (write) to my friend twice a month last year.
26.When new school begins,some students
(forget) the words they leaned last term.
27.Every term the desks and chairs in the classroom
(be taken) good care of .
28.This kind of dictionary
(be sold) out soon.
29.We Chinese people (build) our country into a modem strong one.
30.His teacher was satisfied with what he
(do).

Answer 1

21is knocking
22 will not
23 left
24 ?
25 wrote
26 forgot
27 have been taken
28 has been sold
29 are building
30 did
不敢保证全对