—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 |
—How do you like the book?
—It's quite different from ________ I read last month.
| A．that | B．the one what |
| C．the one | D．which |
________ Sandy's damage is unlikely to last long, it would apparently hurt the total economic output of the fourth quarter.
| A．Since | B．Before |
| C．Unless | D．Although |
The progress of the work will depend on what the weather conditions are and ________ modern the equipment is.
| A．how | B．whether |
| C．what | D．which |
(2013·银川高三二模)It remains to be seen ________ this plan is practical enough to keep the project going.
| A．whether | B．how |
| C．where | D．when |
Scientists have found evidence ________ global warming caused the world's first horses to become smaller nearly 50 million years ago.
| A．what | B．that |
| C．which | D．whether |