There are a lot of problems today which are beyond any single person’s ability to solve，and they call for united_________.
| A．force | B．efforts | C．energy | D．operations |
With all his money, he _________ worry about a little thing like 5 cents!
| A．can | B．must | C．may | D．should |
—That must have been a long trip.
—Yeah, it _________ us a whole week to get there.
| A．takes | B．has taken | C．took | D．was taking |
I was just talking to Margot when Jackson _________.
| A．cut in | B．cut down | C．cut out | D．cut up |
Victor apologized for _________ to inform of the change in the plan.
| A．his being not able | B．his not being able |
| C．him not to be able | D．him to be not able |
—Why does Jane look unhappy today?.
— A letter from her brother _________ a wave of homesickness.
| A．set out | B．set off | C．set about | D．set up |