3.11 —Let’s go to the concert tonight, Mary.
—Sorry, I(). I have to help my mom with the housework.

A. 　division

B. 　area

C. 　 range

D. 　 circle

A. 　 such

B. 　 how

C. 　 as

D. 　 so

A. 　 though

B. 　 since

C. 　 but

D. 　 if

A. 　 making

B. 　 make

C. 　 made

D. 　 to make

A. 　 broke

B. 　 started

C. 　 declared

D. 　 spread

A. 　 standard

B. 　 problem

C. 　 reason

D. 　 purpose

A. 　poor

B. 　 strange

C. 　 foolish

D. 　 lazy