. --- It remains to be seen _____ the plan can be carried out.
--- It is up to you.
| A．where | B．whether | C．why | D．that |
Try your best to help the people when they are in trouble, _______you will feel pleased and happy.
| A．unless | B．or | C．and | D．But |
_____ the right decision _____ the future is probably the most important thing we will ever do in our lives．
| A．Making; concerned | B．Make; concerning |
| C．To make; concerned | D．Making; concerning |
This is a very special flower and it can ________a strong sweet perfume at night.
| A．give out | B．give up | C．give in | D．give over |
Being examined twice a year is the rule that every driverobey in the city．
| A．shall | B．can | C．ought to | D．need |
Keeping a diary is ____ good habit, by which you'll make ____ great progress in writing.
| A．a; a | B．a; 不填 | C．the; a | D．the; 不填 |