_______ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home.
#90114
A
To wait
B
Having waited
C
Have waited
D
To have waited
推荐题目
The     look on his face showed that he was greatly     of being left alone in the house.
#96029
A
terrified;terrifying
B
terrified;terrified
C
terrifying; terrifying
D
terrifying; terrified
_______ how to do the homework, I went to ask my teacher for help.  
#97440
A
Not to know 
B
Not knowing
C
Knowing not 
D
Not known
How could he get the plan _____ without any one to support him?
#98853
A
to carry out
B
carry out
C
carrying out
D
carried out