Don"t smoke until the plane ______ off.
A: takes
B: took
C: has taken
D: had taken
A: takes
B: took
C: has taken
D: had taken
举一反三
- Don't smoke until the plane _____ off. A: takes B: take C: will take
- By the time I got to the airport, the plane( ) . A: took off B: has taken off C: had taken off D: had been taking off
- When we arrived at the airport, the plane ______ . A: already took off B: took off already C: had already taken off D: has already taken off
- When the plane _______, Jean _________ the seat belt. A: takes off, fastened B: took off, had fastened C: took off, fastened D: had taken off, fastened
- When I got to the airport, the plane ______. A: already took off B: had already taken off C: C. has already taken off