You will never know the result ______ you try it by yourself.
| A．when | B．if | C．unless | D．after |
Their life will be__________ if there are ____________children in a family.
A. richer; less B. poorer; fewer C. richer; fewer
He always helps__________ the housework.
A. with B. for C. in
Robots can do manyjobs, because they will never get___________.
A. boring. Boring B. bored, boring C. boring, bored
-What do you think the weather_________ tomorrow?
A. will be B. will like C. will be like
He asked me if I________ mad _______him.
| A．am; at | B． was; at | C． was; to | D． am ; to |