He has five___________ , and they are all doctors working in the same hospital .
| A．sons- in-laws | B．son-in-laws | C．sons-in-law | D．son in laws |
---Thanks for your help, but can you do me one more favor, please？
--- _______, sir．What's it then?
| A．Just a minute | B．It's very nice of you | C．That's all right | D．At your service |
—Why didn’t you go to yesterday’s meeting?
—I would have but I ______too busy working on the important experiment.
| A．had been | B．was | C．were | D．am |
So absorbed_____in her work that she didn’t realize I was behind her.
| A．had she | B．was she | C．she had | D．she was |
—How do you like the glasses?
—This kind of glasses made by experienced workers________ comfortably.
| A．is worn | B．wear | C．wears | D．are worn |
It is not easy to learn English well, but if you ____．You will succeed in the end.
| A．hang about | B．hang on | C．hang onto | D．hang up |