Many cities in the Southern part of the United States, have difficulty （） traffic when it snows.
A: kept
B: to keep
C: keeping
D: is being kept
A: kept
B: to keep
C: keeping
D: is being kept
举一反三
- 74（） A: have kept B: had kept C: have been keeping D: had been keeping
- food __________(keep ) fresh in the fridge. A: keeps B: is kept C: keeping D: kept
- These magazines___ in the library for a long time. A: have kept B: are keeping C: have been keeping D: have been kept
- I was very sleepy. I tried ______ my eyes open but I couldn't. A: keeping B: having kept C: to have kept D: to keep
- Don't be late. I hate to be waiting for a long time. A: being keeping B: be kept C: to be kept D: be keeping