Follow these tips, and your time spent doing research on the Internet ______ much more worthwhile.
| A．was | B．has been | C．will be | D．will have been |
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 in |
All the girls swam in the lake except two, who _____ halfway.
| A．gave off | B．gave up | C．gave away | D．gave out |
—Did you reach the top of the mountain?
—Yes. Even I myself didn’t believe I could______ it.
| A．work | B．climb | C．get | D．make |
His aunt’s letters _____him of those beautiful days when they used to live together in his hometown.
| A．call up | B．call for | C．call on | D．call at |
He has been fired and will have to _____over charge of his office tomorrow.
| A．take | B．hand | C．get | D．go |