In our class, when the bell rang and the teacher closed his book, it was a      for everyone to stand up. 
#5564
A
signal
B
chance
C
mark
D
measure
推荐题目
They wanted someone with _____ for this job, so as a freshman I had _______ that day.
#6040
A
experiences; unpleasant experience
B
an experience; an unpleasant experience
C
experiences; an unpleasant experience
D
experience; an unpleasant experience
--- Who did you spend last weekend with? ---  ______.
#6825
A
Palmer’s
B
The Palmers’
C
The Palmers
D
The Palmer’s