—Is Jack on duty today?
—It_____ be him. It’s his turn tomorrow.
| A．mustn’t | B．won’t | C．can’t | D．needn’t |
I don't understand what the engineer means, but I’ve got ____ rough idea of ____ Project plan.
| A．the; a | B．不填； the |
| C．the；不填 | D．a; the |
---Would you like to go out for a walk?
----.
| A．No,but I can’t afford the time |
| B．No,I don’t feel in the mood for it now |
| C．You may ask your sister to go,too |
| D．No,thank you |
As a result of the serious flood,two-thirds of the buildings in the areas.
| A．need repairing | B．need to repair |
| C．needs repairing | D．needs to repair |
well prepared you are,you still need a lot of luck in mountain climbing.
| A．However | B．Whatever |
| C．Wherever | D．Although |
The news shocked the public,to great concern about students’ safety at schlool.
| A．having led | B．led |
| C．leading | D．to lead |