Had they been warned of the possible danger, they ______.
A: may have escaped
B: could have escaped
C: must have escaped
D: can have escaped
A: may have escaped
B: could have escaped
C: must have escaped
D: can have escaped
举一反三
- The robber _____ this way, for here are his footprints. A: should have escaped B: should escape C: must have escaped D: must escape
- 2. Taxi drivers are being alerted ___ an escaped prisoner, who is believed to have robbed a gun and have been seen on the way to Frankfurt.
- She narrowly escaped () in the bombing. A: to be killed B: killed C: being killed D: to have been killed
- The robber had escaped and was nowhere to be found when the police （） A: arrived B: had arrived C: belongs D: have arrived
- Many species of animal have now __________ from the face of the earth. A: dissolved B: vanished C: faded D: escaped