In order to _____ the rising production costs, the subscription rates have been increased.
| A．add up to | B．look up to | C．cut short | D．keep up with |
_________ the temperature might drop, coal was prepared for warming.
| A．To consider | B．Considered | C．Considering | D．To be considered |
We are told that more new teaching buildings ________ next year.
| A．build | B．was built | C．has built | D．will be built |
The captain urged that the mission ______ before dark.
| A．must be finished | B．be finished | C．ought to be finished | D．was finished |
The _____ as one travels by boat along the Changjiang Three Gorges is fantastic.
| A．scene | B．view | C．scenery | D．sight |
—How’s your tour around the North Lake? Is it beautiful?
—It __________ be, but it is now heavily polluted.
| A．will | B．would |
| C．should | D．must |