She walked home by herself at night, _____ she knew that it was dangerous.
| A．once | B．as | C．unless | D．although |
He _____ a Party member last year.
| A．joined | B．joined in | C．took part in | D．became |
Professor Smith, along with his assistants, _____on the project day and night to meet the deadline.
| A．work | B．working | C．is working | D．are working |
The Sound of Music is the first English filmI have ever seen.
| A．which | B．that | C．when | D．what |
Air is to us _____ water is to fish.
| A．what | B．that | C．which | D．is that |
In _____ film Cast Away, Tom Hanks plays _____ man named Chuck Noland.
| A．a; the | B．the; a | C．the; the | D．a; a |