The children ran away from the orchard(果园)________ they saw the guard.
The number of people invited __________fifty, but a number of them__________ absent for different reasons.
all the required papers, he didn’t answer the questions fluently in class.
With everything ________, the teacher started the slide show.
When help, one often says, “Thank you”, or “It’s kind of you.”
When ____ to danger and conflict, men tend to increase blood pressure, ______ nervous and anxious.