At present ________ of the experiments ________done in labs after the new building has been finished.
| A．four fifth; is | B．four fifths; are |
| C．four fifth; are | D．four fifths; is |
—Do you know where David is?
— Well, he _____ have gone far — his coat is still here.
| A．shouldn’t | B．can’t | C．mustn’t | D．wouldn’t |
He is my favorite film star. I regard him _____ other stars.
| A．more superior to | B．more superior than |
| C．superior to | D．superior than |
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; ＼ |