I always have some trouble understanding him when he (speak) ____________ quickly in class.
举一反三
- He was obviously in some kind of trouble, but I didn't know how I could help him .
- I always enjoy to classical music when I have some free time.
- I have had great deal of trouble ________ the rest of the class.
- I have trouble ____________English, Mr. Lee. A: speak B: speaking C: to speak D: speaked
- I have no trouble ____(persuade) him to change his mind.