By the time Jack r
eturned home from England, his son. from college.
| A．graduated | B．has graduated |
| C．had been | D．had graduated |
--- Cathy, why does your roommate look angry?
--- I’m also feeling puzzled. Maybe I ______ a nerve while asking about her former boyfriend.
| A．have touched | B．was touching | C．had touched | D．touched |
It is obvious ______ the local government can do to protect the environment for the next generations.
| A．how | B．what | C．that | D．which |
— Why do you think he is feeling spiritless?
— Because staying up late makes him at his worst ___________ physical situation．
| A．in terms of | B．in addition to |
| C．on account of | D．regardless of |
--- Hi, Tom. Does John have any hobbies?
--- _______, swimming will appeal to him most strongly.
| A．If anything | B．If ever | C．If any | D．If so |
I’m sorry for ____________，but I have anurgent and important thing to talk to you．
| A．cutting off | B．cutting in | C．cutting out | D．cutting up |