1._______people in the world are sending information by E-mail every day.
A.Several million
B.Many millions
C.Several millions
D.Many million

2.The new suspension bridge _______ by the end of last month.
A.has been designed
B.had been designed
C.was designed
D.would be designed

3.Sandy could do nothing but _________ to his teacher that he was wrong.
A.aadmit
B.admitted
C.admitting
D.to admit

4.Have you seen the film "Titanic",_______leading actor is world famous.
A.its
B.it's
C.whose
D.which

5.It was for this reason _________her uncle moved out of New York and settled down in a small village.
A.which
B.why
C.that
D.how

1._______people in the world are sending information by E-mail every day.
A.Several million
B.Many millions
C.Several millions
D.Many million

D.
million可以类比hundred，many/several hundred people
many/several millions of people
我觉得语法上AD都对，但意思上D更好。（many的范围比several广）

2.The new suspension bridge _______ by the end of last month.
A.has been designed
B.had been designed
C.was designed
D.would be designed

B
根据by the end of判断，用完成时；
又因为是last month，所以用过去完成时。

3.Sandy could do nothing but _________ to his teacher that he was wrong.
A.aadmit
B.admitted
C.admitting
D.to admit

A
句子前面有动词do，but后面加原形。

4.Have you seen the film "Titanic",_______leading actor is world famous.
A.its
B.it's
C.whose
D.which

C
whose leading actor =the leading actor of which

5.It was for this reason _________her uncle moved out of New York and settled down in a small village.
A.which
B.why
C.that
D.how

C
强调句。通过把it was ，that三个词去掉句子仍然完整，可以判断。