You can only be sure of_____you have at present;you cannot be sure of something_____you might get in the future.（）
| A． | that;what | B． | what;/ |
| C． | which;that | D． | /;that |
The first textbook written for teaching English as a foreign language __________ in the 16th century.
| A．came about |
| B．came across |
| C．came out |
| D．came over |
He was busy writing the story all the morning, pausing __________ to search for the right word.
| A．occasionally |
| B．eventually |
| C．urgently |
| D．conveniently |
__________ the adventure film will be shown in the cinema depends on the manager.
| A．What |
| B．Whether |
| C．If |
| D．Where |
The leading actress is __________ speaking highly of her role in the movie, which, of course, made the others unhappy.
| A．often |
| B．usually |
| C．seldom |
| D．always |
—I can't find the famous director. Where did you meet him this morning?
—It was in the hotel __________ he stayed.
| A．that |
| B．which |
| C．the one |
| D．where |