All efforts of cloning an animal will be ________ if there is not enough diversity in the group to overcome illness.
| A．in need | B．in place | C．in vain | D．in case |
.
A volunteer is a person willing to help others, one who offers to do something without__________.
| A．paying | B．paid | C．being paid | D．to pay |
.
The program “Hear with Yushu, Love Has No borders” told touching stories about rescue volunteers, whose brave deeds__________never be forgotten.
| A．can | B．may | C．need | D．must |
.
We didn’t tell Susan about our plan__________upsetting her.
| A．for fear of | B．regardless of | C．in face of | D．instead of |
.
Though the teacher had tried to make the problem easy__________, still Lily and her partner were at a loss.
| A．understood | B．understanding | C．to understand | D．to be understood |
.
Parents give children__________pocket money to let them learn its value from experience at
early age.
| A．the; an | B．a; the | C．/; an | D．/; / |