______ his father’s letter, he decided to make a call to him.
| A．Having seen |
| B．Having been seen |
| C．Not having received |
| D．Having not received |
In those days John with his classmates _____ kept busy preparing for the exam.
| A．is | B．are |
| C．was | D．were |
As I have a meeting at four, ten minutes _____ all that I can spare to talk with you.
| A．are | B．was | C．is | D．were |
The writer and singer ______ here.
| A．is | B．are | C．were | D．do |
. No teacher and no student ______．
| A．are admitted | B．is admitted |
| C．are admitting | D．is admitting |
Nobody ______ seen the film. It’s a pity.
| A．but Tom and Jack have | B．except Tom and Jack have |
| C．but my friends has | D．but I have |