Is this the way you think ________ the problem?

A．of solving

B．of of solving

C．to solve

D．solving

Rather than ________ on a crowded bus, he always prefers ________ a bicycle．

A．ride; ride

B．riding; ride

C．ride; to ride

D．to ride; ride

________ the room temperature, he added some coal into the stove．

A．Keep up

B．In order keep up

C．To keep up

D．So as to keep up

The reason ________ he was late was ________ his car had broken down on the way．

A．why; because

B．that; because

C．that; for

D．why; that

There are three ________ of people waiting outside．

A．dozen

B．score

C．dozens

D．scores

－________ do you go home?

－Once a month．

A．How soon

B．How often

C．How long

D．How far

Have you ________ the book you have been looking for?

A．found

B．found out

C．find

D．discovered

I feel that one of my main duties ________ a teacher is to help the students to become better learners．

A．for

B．by

C．as

D．with

Bob ran the 100 meters in 9.91 seconds, and I have not seen ________ this year．

A．the best

B．better

C．the most

D．more

She was ________ that all the students loved and respected her．

A．such a teacher good

B．so a good teacher

C．so good a teacher

D．such good a teacher