______ I admit that all these problems are difficult, I don’t agree that they can’t be solved.
| A．Unless | B．While | C．Until | D．Since |
.
The boy who was caught ________ in the examination room will be punished by the teacher.
| A．cheat | B．cheating | C．to cheat | D．cheated |
.
Last year the factory ______ over six million records.
| A．put forward | B．put down | C．put out | D．put through |
.
_______ you be interested, I will tell you the whole story.
| A．Would | B．Might | C．Should | D．Could |
.
The wild flowers looked like a soft orange blanket _______ the desert.
| A．covering | B．covered | C．cover | D．to cover |
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______ makes the school proud was _____ more than 90℅ of the students had been admitted to key universities.
| A．What; because | B．What; that | C．That; what | D．That; because |