21Many experts considered _________ quite necessary for the people in the earthquake-hit areas to be given a lecture on psychological comfort.
A.that
B.it
C.this
D.one
开始考试练习点击查看答案22I would appreciate ______ you call back this afternoon for the doctor’s appointment.
A.if
B.that
C.it if
D.it that
开始考试练习点击查看答案23—Mr Johnson, what are teachers supposed to do for the students?—As teachers, we feel ________ our duty to teach our children to be good wherever we are.
A.this
B.that
C.it
D.there is
开始考试练习点击查看答案24___was known to all that William had broken his promise ____he would give them a rise
A.As; which
B.What; that
C.It; that
D.It; which
开始考试练习点击查看答案25 took me ten minutes his thoughts.
A.It; reading
B.It; to read
C.He; reading
D.He; to read
开始考试练习点击查看答案26________is known to us all that the old scientist, for ____________life was hard in the past, still works hard in his eighties.
A.It ; whom
B.As ; whom
C.As; whose
D.What; whom
开始考试练习点击查看答案27I"d appreciate _____ if you tell me some knowledge about rock music.
A.this
B.that
C.it
D.one
开始考试练习点击查看答案28_____ is reported, Shenzhou VI has returned successfully.
A.It
B.This
C.That
D.As
开始考试练习点击查看答案29"I"d like to give my thanks to those ___ help my son will be able to survive his terrible disease" said the woman on TV.
A.who
B.that
C.with whose
D.with their
开始考试练习点击查看答案30The editor of the magazine, Philip Green, is an editor for _____ a lot of teenagers have the greatest respect.
A.that
B.what
C.who
D.whom
开始考试练习点击查看答案