Ⅰ.单句语法填空
1．The household robots are specially designed to_take(take)care of the old.
2．Then a discussion will be held，aiming to_improve (improve) mutual understanding.
3．Please explain it to us again because your meaning didn't really get across.
4．Keeping your body in shape is beneficial (benefit) to mental health.
5．Now that you have expressed your determination(determine) to succeed，you should act.
