In order to get the exact result, the scientists made _______.
| A．a lot tries | B．to do experiments | C．trial and error | D．great try |
If you stand here, you'll get a better of the river.
| A．view | B．sight | C．scene | D．scenery |
Mr. Bill Clinton was elected ____ President of the United States in ____ 1990s.
| A．the; the | B．a; the | C．the; 不填 | D．不填; the |
---- I wonder if I could borrow your bike for a second time.
---- .You nearly damaged it last time.
| A．Why not? | B．I don’t think so. | C．By no means. | D．By all means. |
Betty and Arthur ____ on separate holidays in a few days’ time.
| A．go | B．going | C．are going | D．went |
— Is there anything you want to know?
— I just wonder ____ that makes Jim so excited.
| A．what it is | B．what he does |
| C．how it is | D．what is it |