If a book is ______, we should try to read it attentively.
| A．worthy reading | B．worth reading |
| C．worthy to be read | D．worth being read |
--- Where did you find your lost pen?
--- It was in the park we visited that day.
| A．what |
| B．that |
| C．where |
| D．when |
will it be he leaves the army?
| A．How soon; that |
| B．How long; before |
| C．How soon; since |
| D．How long; since |
is a fact that English is being accepted as an international language.
| A．There |
| B．This |
| C．That |
| D．It |
It is pretty well understoodcontrols the flow of carbon dioxide in and out the atmosphere today.
| A．that |
| B．when |
| C．what |
| D．how |
It was not until the beginning of the meeting he realized_I told him was the only possible way to deal with the problem.
| A．that; what |
| B．what; that |
| C．when; what |
| D．when; that |