He asked me how much on the mountain bike.
A. did I pay B. I paid
C. had I paid D. I had paid
With our knowledge practice , we can make contribution to our society.
A. to base on B. basing on
C. based on D. base on
—Did the boys break the window ?
—No. They did it when they were playing football.
A. by accident B. on purpose
C. at dusk D. as usual
Jerry is so that he won’t listen to anyone’s advice once he had made up his mind.
A. determined B. stubborn
C. reliable D. concerned
—Hi, Bob, are you going to attend tomorrow’s conference?
—Oh, I’m afraid not, invited to.
A. even if B. as if C. if D. since
The money collected should be made use the people who are in trouble.
A. of helping B. to help
C. of to help D. to helping
