Had they known what was coming next, they _____ second thoughts.
A. may have B. must have had
C. could have D. might have had
---What do you think made her mother so angry?
---______ the exam.
A. Because she didn’t pass
B. Her not passing
C. She didn’t pass
D. Because of her not passing
----Shall we go and help them with their work?
----We’d better not. They said we’d just be ______ if we tried to help.
A. in a way B. by the way
C. on the way D. in the way
I wonder what it feels like to be one of ______ really rich. The Browns already have Rolls Royce and now they are buying ______ third.
A. the; the B. /; a C. the; a D. /; the
Some kinds of animals can ______ the color of their surroundings.
A. take on B. dress up
C. put on D. get into
The pollution is getting worse and worse; we must stop pollution ______ a better life.
A. to live B. from living
C. living D. Live
