---When do we need to pay the balance?
--- ____ September 30.
| A．In | B．By | C．During | D．Within |
---It’s getting dark, but Mr. Johnson is still at his office.
---No surprise. Who else can ______ he does?
| A．do less work than | B．work as hardly as |
| C．work as hard as | D．be working hardly like |
Since David ______ downloaded a virus into his computer, he can not open the file now.
| A．readily | B．accidentally | C． horribly | D．irregularly |
---How often do you eat out?
---______, but usually once a week.
| A．Have no idea | B．As usual | C．It depends | D．Generally speaking |
--Have the police found the parents of the baby found by the road?
---Not yet. His identity ______.
| A．would be found out | B．has been found out |
| C．is being found out | D．had been found out |
---Mr. Smith, ______ he have all these letters typed for you right away?
---He ______. They should be ready by 10 o’clock this morning.
| A．will; must | B．shall; has to | C．need; will | D．would; ought to |