I ____ you, but I didn’t think you would listen to me.
| A．could have told | B．must have told | C．should tell | D．might rell |
The scientists are beating their brains trying to _______ a solution to the problem.
| A．come about | B．come across | C．come out | D．come up with |
It was _______ back home after the experiment.
| A．not until midnight did he go |
| B．until midnight that he didn’t go |
| C．not until midnight that he went |
| D．until midnight when he didn’t go |
With the price of pork and eggs _______ quickly, CPI has become a hot phrase among Chinese.
| A．raising | B．going up | C．to raise | D．to go up |
To improve the quality of our products, we asked for suggestions _______ had used the product.
| A．no matter who | B．who | C．whoever | D．whichever |
With more forests being destroyed in that area, huge quantities of land _______ deserts each year.
| A．has been turned into | B．had been turned into |
| C．is being turned into | D．are being turned into |