His coming brought their quarrel to an end. There _____a moment of uncomfortable silence.
| A．was followed | B．following |
| C．followed | D．was following |
—Do you know where David is? I couldn’t find him anywhere.
—Well. He _____have gone far—his coat’s still here.
| A．shouldn’t | B．mustn’t | C．can’t | D．wouldn’t |
If the new arrangement doesn’t _____, we’ll go back to the old one.
| A．work over | B．work out | C．work up | D．work down |
All the girls swam in the lake except two, who _____ halfway.
| A．gave off | B．gave up | C．gave away | D．gave out |
We’re so busy that no one in the office can _____ for any other work.
| A．spare | B．be spared | C．share | D．be shared |
You’ll never guess who I met today—my old teacher! We _____ for 20 years.
| A．don’t meet | B．haven’t met | C．hadn’t met | D．couldn’t meet |