________ in the regulations(规定)that you should not tell other people the password of your e-mail account．

A．What is required

B．What requires

C．It requires

D．It is required

A dozen ideas were considered ________ the chief architect decided on the design of the new buildings of our school．

A．before

B．whether

C．unless

D．because

“Attention, please．Whoever can answer one of my questions ________ receive a prize,” the teacher said in class．

A．might

B．would

C．should

D．shall

On ________ more serious note, the scientist pointed out that such pollution must have done much harm to ________ nature．

A．the, the

B．a, the

C．不填．,不填

D．a,不填

On returning home, she found a note ________ to the door, ________ “Call in later．”

A．attaching; reading

B．attaches; saying

C．attached; which reads

D．attached; reading

To some extent, uncontrolled information from the website that many people turn ________ false．

A．to prove

B．to proves

C．prove

D．proves

There ________ no buses, we had to walk home after work yesterday．

A．was

B．were

C．being

D．had

Although all of the apples ________, none of them ________ good．

A．have been tasted; taste

B．have been tasted; are tasted

C．have tasted; taste

D．have tasted; are tasted

Such good use had been ________ his spare time ________ his English has improved a lot．

A．made of; as

B．made of; that

C．made in; that

D．found in; as

This passage puzzled me so much that I stopped for a few seconds to ________．

A．make it up

B．make it out

C．make it for

D．make it over