John Snow found that the polluted water was _________ for the outbreak of cholera.

A. to blame         B. to be blamed        C. blamed        D. blaming

She smiled happily，________ a set of amazing white teeth to us.

A．exposing                               B．being exposed

C．exposed                                D．to expose

Mrs. White showed her student some old maps _________from the library.

A. to borrow        B. to be borrowed

C. borrowed       D. borrowing

Only after the woman had her own child ________ how difficult it was to be a mother.

A. she realized         B. had she realized

C. she had realized      D. did she realize

Although this medicine can cure you ________your illness, it has a bad effect____  you.

A. for; in           B. for; on        C. of; on          D. of; at

_____ no doubt _____ the Amber Room is one of the wonders of the world.

A. It is; that      B. It is; whether

C. There is; that     D. There is; whether

She thought I was praising her son, _____ as a matter of fact, I was scolding him for his bad behavior at school.

A. while         B. therefore       C. which       D. so that

Mr Smith, _____ of the _____ speech, started to read a novel.

A. tired; boring    B. tiring; bored

C. tired; bored   D. tiring; boring

--Hi, Mary!

-- Oh, it's you. Jack! I ______ you. You look like a star with the glasses.

A. didn't recognize    B. don't recognize

C. haven't recognized   D. hadn't recognized

— I am taking the college entrance examination next week.

— ____!

A. Well done     B. Good luck

C. Congratulations     D. Have a good day