The professor walked onto the platform and seated himself in a chair, ____ for answering questions. 
#104211
A
had prepared
B
being prepared
C
preparing
D
prepared
推荐题目
—Will you go to the park now? —Not until I ________ my physics exercises. 
#104737
A
will finish
B
have finished
C
will have finished
D
had finished
 I ______, but I was prevent by the heavy rain.
#104168
A
had meant coming
B
had meant to come
C
meant to come  
D
meant coming