___ myself to my study, I would be sitting in a comfortable office now.
| A．If I devoted |
| B．Should I devote |
| C．Would I devote |
| D．Had I devote |
He would have been a doctor 20 years ago, but he _____ to be a teacher.
| A．chooses | B．chose | C．had chosen | D．has chosen |
—We must _____ their permission whatever the cost is.
— But I’m afraid they will reject.
| A．obtain | B．cast | C．forbid | D．undertake |
I promise _____ else can you find _____ better computer at such a low price.
| A．anywhere; a | B．nowhere; the | C．nowhere; a | D．somewhere; ＼ |
It wasn’t until he came back _____ he knew the police were looking for him.
| A．when | B．that | C．since | D．before |
I don’t know why you are so concerned — it’s not your problem _____ .
| A．first of all | B．after all | C．above all | D．in all |