I don't know this part of the countryside well, so we’d better ___ the path.
| A．insist | B．stick to | C．set off | D．keep on |
—I’m thinking of the test tomorrow. I’m afraid I can’t pass this time.
—________！I’m sure you’ll make it.
| A．Go ahead | B．Good luck | C．No problem | D．Cheer up |
The new tax would force companies to __________energy-saving measures.
A. adaptB. adoptC. adjust D address
If the American government the expert’s suggestion, the world economy would not be in such a mess now.
| A．followed | B．follows |
| C．should follow | D．had followed |
He had hardly reached home _______ an unexpected guest came to visit him.
| A．then | B．when | C．the moment | D．than |
Had they known what was coming next, they ___________ second thoughts.
| A．may have | B．could have | C．must have had | D．might have had |