__________ many students have known about the news, you, as our monitor, had better announce it officially in front of all the students.
| A．Unless |
| B．Although |
| C．Once |
| D．Because |
Do you often help your father ___ the farm work during the summer vacation?
| A．for | B．on | C．in | D．with |
Do you often help your father ___ the farm work during the summer vacation?
| A．for | B．on | C．in | D．with |
They sometimes go on working ____ the light of the moon.
| A．on | B．under | C．by | D．for |
He has never been to France, ___ Harry.
| A．neither has | B．nor did | C．so does | D．so has |
They don't study in No 1 High School, ___ those boys.
| A．so do | B．so don't | C．neither study | D．nor do |